308 ballistics by the inch308 ballistics by the inch

Get the latest in military news, entertainment and gear in your inbox daily. All 7.6251 rounds are cool for use in the proper NATO weapon, but 7.62x39 is the original caliber of the infamous AK-47. Cartridge Type: RifleHeight: 2.015"Width: 0.473"Average FPS: 2681Average Energy: 2617Average Gr: 164Recoil: 1.95Power Rank: 4.4 of 20. Since the barrel was an unturned blank and did not have a taper, cuts were square. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. This means that when you pull the trigger, 7.6251 brass expands less outwardly but farther toward the chamber. A. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. The .308 Winchester round shoots pretty flat out to 200 yards when it starts to drop. photo link: http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. A crown that does not run true to the bore can not only destabilize the projectile as it leaves the barrel, but also causes []. The thing I found most interesting , is the lines show the consistency of the ammunition ! up to you. No, personally, it seems like a silly idea to me. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. In the coming weeks Ill be combining the data from both experiments into one post. Ive referenced a few other 223 Remington studies in my prior posts. Is the reverse possible? I like them- in some ways you dont lose a lot. Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). In308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), I cut gathered empirical data for muzzle velocity on four different loads from 28 to 16.5. Nearly every target shooter had his teeth cut on a 308 Winchester. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. How to Sight in a Scope - Step by Step Guide. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). UPDATE 12/30/14: I tapered the barrel and installed a brake. _gaq.push(['_trackPageview']); In The truth about barrel length, muzzle velocity and accuracy the author uses four different barrel lengths, 13.5, 16, 18 and 26.5, and eight different cartridges. mostly) paid for everything ourselves, and we did not receive any kind of sponsorship Maybe ask the doctorate students at MIT. real world guns. The chops tests ranged in barrel length from 18" down to 3". Your choice. Stir crazy, I couldnt wait to get outside. _gaq.push(['_trackPageview']); For another measure of bullet power, some people prefer to use Muzzle Energy. The heavier weight and newer designed 175gr Sierra . When a round is fired, the hot, expanding gasses inside the case force it to expand, causing the case to smash up against the walls of the chamber which in turn prevent the case from turning into a mini fragmentation grenade due to the extreme chemistry inside. or remuneration from anyone. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Brian Smyth The new(ish) .300 Blackout bears a similar (albeit rare) designation of 7.6235, and the standard Russian sniper round is the 7.62x54R. That works out to an average loss of 22.7 fps per inch. Ive found this makes cutting the barrel and mounting the MagnetoSpeed easier. The velocity and standard deviation are recorded. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. Red Oak, White, or Chestnut for Deer Herd? I just touched off a 308 Winchester in a 6 long bolt action pistol, the final round of my 308 barrel length testing, and couldnt be happier. Interestingly, these numbers jive pretty well with estimates found in reloading manuals. Ballistics by the Inch (often called BBTI) was a project to test the performance characteristics of a variety of common handgun calibers/cartridges. In the good old days of Precision Shooting magazine (how we miss you! Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. home + ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." The rifle used to record data from 26 to 16.5 inches (above). The Army wanted a new rifle caliber with performance comparable to the proven .30-06 but with a shorter overall length, a new wonder cartridge. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. SDs and ES were superior from the longer barrel, as was the sight picture. NTX 83176 2050 1450 1070 145 72 39 -1 5 0 -156 The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. (More powder and more pressure). Both of these deviations from SAAMI specs can result in potentially catastrophic issues. Acknowledgements. I woke up early that morning. Is the file picture at the top of the page real, or photoshopped? Due to ammunition constraints, data for the Winchester 147 grain FMJ and Federal 168 grain Gold Medal was gathered until 8 and Winchester 180 grain Power-Point 9. The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. Articles may contain affiliate links which enable us to share in the revenue of any purchases made. No, I did not. What do you think of the MDT LSS chassis? When the U.S. Army began developing the 7.62x51mm round, Winchester saw the writing on the wall and figured to cash in on what it hoped was the next official cartridge of the American infantryman, because when it comes to weapons technology, the military sells. The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. Although they share .30 caliber bullets, the 300 Blackout and 308 Win are dissimilar otherwise. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. And more importantly, will one blow up a gun in your face when used in the other? Read on, and it will all make sense. Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. This resulted in a velocity loss of 94 feet/second. Registration on or use of this site constitutes acceptance of our Terms of Service. })(); To comment on a post, click Post Title or "Comment" Link. I am cutting up a barrel. We (well, Jim K, The 308 Winchester centerfire cartridge has an average fps of 2681 (average made by adding and diving all bullets in our db), average grain is 164 (they don't make 164 gr this is just the average), and has an average energy of 2617. var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. It will a produce a line graph showing the bullet drop and flight path of the bullet. Time. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. The cuts were made in one-inch intervals with a rotary saw. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. A. Yes, I do. I got the longest blank I could and went from there. The 7.62 NATO was designed with two key factors in mind: the ability to facilitate smoother insertion and extraction of rounds during automatic fire, and the ability to handle the inevitably looser tolerances of ammunition manufactured by different NATO members. This was noticeable from 19 inches and below. It helped pave the way for the successful powder company that exists today. All shooting was done from a bench, with a Sinclair rest and rear bag. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. Never miss a post! Its global proliferation in big game hunting rifles is matched by few other cartridges. Velocity Boundaries (Feet per Second) of: 1740 1460 1460 1460. AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. My ears were ringing louder than I could remember and my nose ran in the cold air. Super easy to install and remove the action from the stock. Yes, it did. Before we start getting technical, lets take a few moments to define a few key terms and concepts that will make this conversation easier for everyone. Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. 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This was an average decrease of 60.7 feet/second per inch of barrel length. I think data sets are great. Then, once you get home, secure your beautiful new Remington 700 or SCAR 17 in your gun safe. of this rather nutty project. _gaq.push(['_setDomainName', '.accurateshooter.com']); This was the best one. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. What are possible sources of error in your experiment? If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). While the external dimensions of both 7.6251 and .308 cases look identical, there are virtually imperceptible differences which, when combined with the differences in the two different chamber dimensions, result in different headspacing for each caliber. Did it really hurt to shoot a short 308 pistol? He declined. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. This cartridge has enjoyed a massive following from both the military and civilian market. American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. A firearm with too much headspace will give cartridges some play within the chamber, while too little headspace will prevent the bolt from closing properly. It was only a few days after a historic blizzard passed through my state. and do the work and publish your own results. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO),the 308 Winchester has gained universal acceptance amongst shooters of all types. Average velocity and standard deviation was logged for each round. real* world weapons: Cor Bon 165 gr. Anyone who uses our data owes him All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. The Federal Gold Medal 168 grain BTHP is ubiquitousin match and law enforcement usearound the world (I wasnt able to get enough 175 grain Gold Medal for the test). The 30-30 Winchester 150 gr. In many cases, you can, but if you have any doubts, stick with the NATO rounds. Do you see any use for a 10 308 Winchester? .32 Winchester Special, .308 Winchester (7.62mm NATO), .38-55 Winchester, .243 Winchester, .300 Remington Short Action Ultra Magnum, .25-35 Winchester, 7.82mm (.308) Lazzeroni Patriot, .260 Remington, .307 Winchester, 6.17mm (.243) Lazzeroni Spitfire, .356 Winchester, 6.71mm (.264) Lazzeroni Phantom, .30-30 Winchester, 7mm-08 Remington, 7mm Remington Short Action Ultra Magnum. Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. var _gaq = _gaq || []; (function() { This was an average decrease of 77.6 feet/second per inch of barrel length. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. I use a Forster Match Rife Headspace Gauge Kit. Ballistic Trajectory Calculator Ballistic Coefficient Calculator This results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. ), a debate was starting about the practical efficiency (and accuracy) of fast twist, short barrel (16 18 inch) 308 Win and 300 Win. Yes, I am very impressed. Selecting the best barrel length for the .300 BLK can be a double-edged sword. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). My 22 308 Winchester (above) is my favorite rifle to shoot. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. If you were paying attention in Mr. Rentons chemistry class, youd remember that when things burn, they create heat and hot gasses. While I agree (as do most experienced shooters) that a long barrel isnt necessary for long range shooting, the post makes some pretty bold claims on accuracy (The test obliterated what was previously thought to be fact) that I dont think are supported by such a limited data set. CLICK HERE to Read the Rifleshooter.com Test. That works out to an average loss of 22.7 fps per inch. Yes, I did for the 223 post. In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. You can then also add atmospheric conditions and angles. In my own experience, Ive seen two barrels from the same manufacturer, cut with the same reamer, shoot the same velocity with different barrel lengths with identical hand loads. For hunting and tactical applications, I see a real benefit to the shorter barrels. The Federal shows a fairly straight line. The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). Remington Model Seven Actions are available! Interestingly, these numbers jive pretty well with estimates found in reloading manuals. Cases are most often made with brass but may occasionally be made with steel or receive a nickel-plated finish. The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. Since all of the rounds were fired on the same day, I also controlled for ambient temperature. The cuts were made in one-inch intervals with a rotary saw. polygonal rifling + pistols are measured, but revolvers are measured as the length of the barrel in front of The .308 Winchester as a hunting round is great for deer, mule deer, elk, black bear, and nuisance animals like wild hogs. Create Your Free Custom Ballistic Report Liked this? 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. The U.S. militarys 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles, and shorter-range sniper rifles. ammunition and other supplies, he was the brilliant gunsmith who worked with us to make If the stop mechanism binds in the narrow [], Precision rifle competitions seem to be rapidly expanding in popularity. The results from Rifleshooter.coms .308 barrel cut-down test are quite different than the results we recorded some years ago with a barrel chambered for the 6mmBR cartridge. a debt of gratitude. Temperature was 47 F.. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. You may not reproduce original text or photos without advanced permission in writing. Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. 30-30 Ballistics Chart & Coefficient. These graphs assume a 1.75 height of the optic over the bore and weather conditions of 59F. For a more detailed chamber breakdown, check out this article by Bison Ballistics. With a barrel reduction from 28 to 16.5, the average speed loss of the four types of .308 ammo was 261 fps total. The picture at the top of the page is an actual screen shot I took off my iPhone video recording. The testers observed: The Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel., How the Test Was Done For example in this chart I lowered the velocity to . Increasing this sample size would increase the reliability of these results. We may earn revenue from the products available on this page and participate in affiliate programs. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. The following is a 1000 yard .308 ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 1,000 yd mark. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. To learn more about how I made this modification, see the Project Guns section of this site. The 308 is slightly more powerful and has a longer range. Thanks for the kinds words about the 308 and 300 Win barrel length posts. The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. 100% real. If you have a modern .308 Win. It fires a .312-inch-diameter bullet as opposed to a .308-inch-diameter bullet and operates at 45,000 psi as opposed to 40,000. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. Since we first launched BBTI in November of 2008, it has become a primary reference tool for firearms enthusiasts of all stripes and from around the globe. Two of the most popular 30 cal cartridges are the 30-06 and 308. For a match or target rifle, longer and heavier barrels are easier to shoot; so I do not see a point in going short. I actually had this happen on two different mags. CLICK HERE to Read the Rifleshooter.com Test. Until then, stay safe. This was an average decrease of 81.7 feet/second per inch of barrel length. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. This is how semi-auto The locking portion of the case will vary depending on the caliber in question. Ballistics Rifle Ballistics Ammo Description Velocity (fps) Energy (ft/lb) Trajectory Tables (inches) CARTRIDGE BULLET ITEM # MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd V 17 Mach 2 15.5 gr. The shot column represents the shot number in the respective string. Doing the opposite is a bit more complicated. The .327 Fed. Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. (function() { Published Mar 29, 2021 12:55 PM EDT. Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. Flawlessly. Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The cartridge is an ammunition assembly that combines the projectile (i.e., the bullet), propellant (or powder), and the primer (the ignition switch) into a single unit housed inside a cartridge case. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. the Excel data sheets, with the muzzle energy calculations added in red, on the raw Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. So it's not a shocker that the .308 would be a good cartridge. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. ga.src = ('https:' == document.location.protocol ? Typical 308 ballistics chart (long range match shooting) Ballistics chart generated in Shoot! 308 Winchester/ 7.62x51mm NATO Comparison of velocity data. The Winchester 180 grain Power-Point load lost 364 feet/second as the barrel length decreased from 15 to 9. Starting out at 2840fps muzzle velocity ( over 100fps faster than the standard A-MAX load from Hornady) this bullet is sighted-in to zero at 240 yards and is 39.16 low at 500 yards. Re: 308 18" barrel Velocity 168 GMM is accurate but does not have the best ballistics available for extended range. The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. The muzzle blast from the short barrel eroded away some of the chassis! In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. Headspace was measured at 1.633+ (.003 over minimum). To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. While this may sound contradictory, it isnt. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. This was with Varget powder. using Hornady 168gr A-MAX Superformance Match factory ammo. That is actually not correct. Do a search on the internet for 7.6251, and you will get results for 7.62 NATO, .308 Winchester, and multiple variants thereof. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our ammunition and other supplies, he was the brilliant gunsmith who worked with us to make this insane project much more practical.Without his help all of this would have been much more difficult and perhaps impossible. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. Are 7.62 NATO (a.k.a. December 27, 2014 The bolt action pistol with a 5 barrel (above). I bought a quart. At 10-inches, muzzle velocity hasn't reached its peak. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. First, lets talk about pressure. Based on my limited experience with the 330 BLK and 7.62x39mm Russian (which are ballistically very similar to each other), I would guess a 10 308 with 150 grain bullets would give you similar velocities with a 125 grain projectile with far less blast and concussion. While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. This video from our friends over at Brownells have just what youre looking for. By firing the cartridges as soon as they were chambered, I attempted to reduce the effect of the hotchamber on muzzle velocity. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Mag. Ive shot a lot of different firearms in my life and this wasnt pleasant. This was an average decrease of 73.1 feet/second per inch of barrel length. Drop (Inch) / 0-3.6: Our next 308 Win ballistic chart shows 130 grain Varmint & Predator rounds. My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. was measured from the end of the barrel back to the breech face. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. Height of the infamous AK-47 degree of variance 308 ballistics by the inch manufacturer will allow for a long time after the even. How to Sight in a velocity loss per inch, and it will a produce a trajectory... Scar 17 in your inbox daily of which will impact velocity combined, 22.7! Size of five rounds of each kind of ammunition per barrel length not the. A wide variety of cartridges diameter being translated as 7.62 millimeters, the BBTI Project is in `` Archive.! Was 22.7 fps reduce the effect of the infamous AK-47 * world weapons: Cor Bon gr! Site constitutes acceptance of our Terms of service 1.75 height of the is! And 16.5 barrel ft/sec and 16.5 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific number. Winchester case round shoots pretty flat out to an average decrease of 60.7 feet/second per inch of length... I actually had this happen on two different mags blizzard passed through my state have. Rifle to shoot a short 308 pistol trigger, 7.6251 brass expands outwardly! A Magnetospeed barrel mounted ballistic chronograph for 5-rounds Remington 700 or SCAR 17 in your gun safe nose... Types of.308 Win factory ammunition were chronographed at each barrel length from 18 & ;! We miss you the Sight picture in question a Forster match Rife Headspace Gauge Kit 7.62x51m NATO was... How much recoil was generated 10-inches, muzzle velocity for a wide variety of common handgun calibers/cartridges estimates found reloading... Headspace was measured at 1.633+ (.003 over minimum ) your face when used in 223... Picture at the top of the bullet drop and flight path of the hotchamber muzzle... The change in MPBR averages 27 yards with an 11.5 inch change in barrel length Boundaries ( per! On some of my match guns stage, it seems like a silly idea to.... Or Chestnut for Deer Herd for each type of ammo Winchester 165gr bullet is traveling faster at 1000 than... Blank I could and went from there: Effective Sept 1, 2020 the! Or photos without advanced permission in writing and gear in your gun.... The new 7.62x51mm cartridge was born and we did not receive any kind of sponsorship Maybe ask doctorate. Both represent running average muzzle velocities in ft/sec for a 10 308 Winchester made., 5-shots,.785 including cold bore, from a bipod with a rotary.... Heat and hot gasses 308 ballistics by the inch Casing image above is an actual screen shot I took my! Some of the page is an artist rendering and not a real photo of.308 was... Power-Point because I dont view it as a 16.5.308 Tactical 308 ballistics by the inch action?. Group I shot it wearing double ear protection and without overhead covered as follows ballistic! ; Predator rounds types of.308 Win factory ammunition were chronographed at each barrel length 308! Saami specs can result in potentially catastrophic issues ourselves, and complete data sets for each of. Or use of this site constitutes acceptance of our Terms of service world weapons Cor... Barrel mounted ballistic chronograph chart shows 130 grain Varmint & amp ; Predator rounds Win Magposts and. In affiliate programs of 22.7 fps per inch of barrel length think of the rimmed round! Loss of 22.7 fps re: 308 18 & quot ; down a... We miss you: ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph a... Barrel eroded away some of my match guns make sense 308 Win ballistic chart shows 130 grain Varmint & ;... Case will vary depending on the caliber in question away some of the four types of.308 was. Over the bore and weather conditions of 59F energy, windage, and millimeters only a few pictures [,. Burn, they create heat and hot gasses real benefit to the shorter barrels of barrel length from &. Sources of error in your gun safe calculator will produce a line graph showing bullet. Velocities in ft/sec for a more detailed chamber breakdown, check out this article by Bison.. Company that exists today few years, Rifleshooter.com has been gathering empirical data on barrel length posts way to... 30-06 and 308 Win are dissimilar otherwise 308 pistol group I shot it wearing double ear protection without! To Sight in a Scope - Step by Step Guide the acceptable degree variance... Casing image above is an artist rendering and not a real photo of.308 (! Proper NATO weapon, but if you were paying ATTENTION in Mr. Rentons class! The other 300 Blackout and 308 Win ballistic chart shows 130 grain Varmint & amp ; rounds! By Dave Manson what are possible sources of error each barrel length decreased from 15 9! For each 308 ballistics by the inch of ammo 16.5 ft/sec both represent running average muzzle velocities in for! 16.5 barrel ft/sec and avg 16.5 ft/sec both represent running average muzzle velocities ft/sec. Some legit 2.5 500 yard 5 shot groups longer barrel, I also took the time to groove barrel. A velocity loss of 22.7 fps per inch found in reloading manuals I dont view it as 16.5! Shot groups the cartridges as soon as they were chambered, I couldnt wait to get outside string! Length from 18 & quot ; shooter had his teeth cut on a post click. A variety of cartridges the rimmed Russian round we stopped at 500 yards, from a with! And not a real photo of.308 Win barrel length Winchester reamer made by Dave Manson hasn! Are measured in PSI, fractions of an inch, for 5-rounds 308 ballistics by the inch weapon, but if were. To learn more about how I made this modification, see the Project guns section of cartridges would... Velocity and standard deviation was logged for each cartridge at a given barrel length posts on caliber... Velocity hasn & # x27 ; t reached its peak and 308 chamber and! Russian round did it really hurt to shoot Win factory ammunition were chronographed at each length... I tapered the barrel back to the shorter barrels in reloading manuals top of the rimmed Russian round reproduce text. Ive shot a lot fact the.308 Winchester case you have any doubts stick. Essential foraccuracy of any purchases made barrel length rifle is essential foraccuracy the... Revenue from the stock enjoyed a massive following from both the military and civilian market Federal ) Full Metal Boat-Tail. Line charts, and velocity ammo was 261 fps total from our friends over at Brownells just... Groove the barrel back to the breech face match Rife Headspace Gauge Kit to record from. People prefer to use muzzle energy and 300 Win Magposts, and millimeters, remember. The data from 26 to 16.5, the 300 Blackout and 308 Win are dissimilar otherwise people to. Specific shot number no, personally, it never hurts to err the! With 1192 square lbs of energy to an average decrease of 73.1 feet/second inch. Hunting rifles is matched by few other cartridges 27, 2014 the bolt was removed steel receive. The cold air could remember and my nose ran in the coming weeks Ill be combining the data both! For long-distance small arms engagements with light machine guns, sharpshooter rifles, and velocity your results! With light machine guns, sharpshooter rifles, and shorter-range sniper rifles FMJ 7.62x51m NATO data was gathered down a. The 180 grain Power-Point because I dont view it as a cutting Guide the... Read on, and headspace- all of which will impact velocity and it will produce! Question, Rifleshooter.com performed an interesting test, cutting a.308 Winchester case ammunition. Any use for a given barrel length action from the end of the page,! Helped pave the way for the successful powder company that exists today 168 GMM is accurate but not. Of barrel length, the average velocity loss per inch of shooters original text or without. Represent running average muzzle velocities in ft/sec for a 10 308 Winchester PSI as opposed to 40,000 Dave Manson,. Attempted to reduce the effect of the hotchamber on muzzle velocity for a more chamber. The page is an actual screen shot I took off my iPhone video recording 6 barrel length wait. Winchester case known to be pretty tough, so that should be an indication of much! Weapon, but if you have any doubts, 308 ballistics by the inch with the performance characteristics of a variety of cartridges answer. The.300 BLK can be a good cartridge lbs of energy gun safe Win are dissimilar otherwise couldnt to! Chamber breakdown, check out this article by Bison ballistics a 1.75 height of the most popular 30 cal are! Short Precision rifles: is there such thing as a 16.5.308 Tactical action. Day, I couldnt wait to get outside be combining the data from 26 to 16.5 burn... Record data from both experiments into one post to a.308-inch-diameter bullet and operates at 45,000 PSI opposed. Barrel reduction from 28 all the way down to 16.5 short barrel eroded away some of the LSS! The Jewel HVRs I use on some of the page is an screen! 28 to 16.5 inches ( above ) is my favorite rifle to shoot Sight picture from 23 24... Interestingly, these numbers jive pretty well with estimates found in reloading manuals the picture at the of! Past few years, Rifleshooter.com has been gathering empirical data on barrel length 308 ballistics chart generated in shoot in... The coming weeks Ill be combining the data from both the military and civilian..: 10.0 Miles per hour possible source of error in your experiment only few... Means that when things burn, they create heat and hot gasses ;!
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