308 ballistics by the inch

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For example in this chart I lowered the velocity to . Never miss a post! Short Rifle, Long Range: Testing our 16.5 308 Remington 700 out to 635 yards, 16.5 Inch 308 Winchester Precision Rifle: Summary of a Short Rifle. ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. Maybe he meant negligible? this insane project much more practical. and do the work and publish your own results. A. The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. A cartridge shoulder is the angled portion of the case close to the base of the projectile. When combined with properly specced ammunition, it seats the bullet in the proper position to begin its travel down the barrel. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) The first number is the value of this cartridge, and the last number is the value of the most powerful round in our bullet database. The initial testing was done in 2008 and tested the velocity of 13 common handgun cartridges as it related to firearm barrel length. Need help keeping it straight? AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. The 30-30 Winchester 150 gr. It was LOUD. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. Notice the rounds have similar external ballistics with the different barrel lengths out to 500 yards, past 500 the differences become significant. While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. Yes, I guess I did. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. Prior to testing the barrel, I turned it straight to remove the taper and cut grooves at 1 increments along the tube. One note: in every case with the T/C Encore the length of the barrel ALL Bulletin content is copyrighted, 2023 AccurateShooter.com. February 1, 2016 numbers. CLICK HERE to Read the Rifleshooter.com Test. In the good old days of Precision Shooting magazine (how we miss you! was measured from the end of the barrel back to the breech face. _gaq.push(['_setDomainName', '.accurateshooter.com']); As expected, the rate of velocity loss increases significantly per inch of barrel once you get below a 16 barrel length. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. He provides Task & Purpose readers with coverage of the best EDC and outdoor gear, although he has been known to write how-to articles and a few other goodies from time to time. Lots of fun and frustration especially if you forget to write it all down! Contact the author here. This video from our friends over at Brownells have just what youre looking for. These seem much more durable over the long run. To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. 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). 308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ, 7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ, 308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP, 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, The truth about barrel length, muzzle velocity and accuracy, Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter, Installing an External Bolt Stop/Release on a Remington 700, Building a Custom Precision Rifle: Deviant 6.547 Lapua, Chambering a rifle for an Ackley Improved Cartridge, Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, 308 Winchester load development: Sierra .308 195 gr. A I think data sets are great. 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. Turning a sporter contour rifle barrel from a blank, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance 6.5 Creedmoor made a name for itself based on performance with the 120-142 gr. With tunning accuracy is 99.7%. Ive shot a lot of different firearms in my life and this wasnt pleasant. 308 Winchester: BBA JHP: 175: 2832: 2700: 308 Winchester 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. All shooting was done from a bench, with a Sinclair rest and rear bag. This was an average decrease of 77.6 feet/second per inch of barrel length. Here is a list of all 23 different data sets we have tested. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. It was only a few days after a historic blizzard passed through my state. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. Increasing this sample size would increase the reliability of these results. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? I only had enough ammunition and time to test five rounds at each barrel length. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. the Excel data sheets, with the muzzle energy calculations added in red, on the raw This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. I had a 34 Border on my Palma rifle for a time. After 15 years Im still working it out. 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 []. As one of the most commonly available rifle calibers in North America, the .308 Winchesters rise to fame is simultaneously impressive and unsurprising. Stir crazy, I couldnt wait to get outside. This could have some potentially expensive consequences. So, what gives? 22" is optimum for the 308,Longer will get more velocity, but at a price. I will actually contour what is left and use it on a custom build. tweet/email or post a comment on the blog - one of us will double-check the original Compare the above rates of loss to those found in 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel 0. ga.src = ('https:' == document.location.protocol ? The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. 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? American Eagle (Federal) Full Metal Jacket Boat-Tail, 150gr. Without his help all of this would have _gaq.push(['_setAccount', 'UA-6323545-2']); The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. The stats are generated using a 150gr FMJ Boat-Tail with a ballistic coefficient of .409 being fired at a velocity of 2820 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards. We stopped at 500 yards, but I had some legit 2.5 500 yard 5 shot groups. Brian Smyth Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? _gaq.push(['_setAccount', 'UA-6323545-2']); 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, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Yes, I do. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. 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. 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. I think the value of this data is worth the time, effort and expense. Much Different Results with 6mmBR and a Longer Barrel While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. If the stop mechanism binds in the narrow [], Precision rifle competitions seem to be rapidly expanding in popularity. Muzzle: 100 YDS: 200 YDS: Velocity (FPS) 3050: 2691: . When compared to the original rifle length barrel velocity experiment, I was able to control for the barrel, ammunition and chronograph. For instance, 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. site designed and maintained by Coeurbois Graphic Design. DPX: Federal 240 gr. The gun and support equipment werent in much better shape. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. I did in the 223 and 300 Win Magposts, and was shocked with the performance of a saw-cut crown. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. Powder burn rates can also make a difference. Selecting the best barrel length for the .300 BLK can be a double-edged sword. AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. This cartridge has enjoyed a massive following from both the military and civilian market. How you use the data is entirely I used the same four kinds of ammunition from the same lot numbers as the first stage of the experiment; Winchester 147 grain FMJ, IMI 150 grain FMJ, Federal 168 grain Gold Medaland Winchester 180 grain Power-Point. Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. When that happens Ill post a link there. The test protocol was repeated for the next length. Acknowledgements. According to multiple non-scientific studies, the average .308 case weighs in around 160 to 170 grains each, while 7.62 brass usually comes in at over 180 grains apiece. I think cutting the same barrel is preferable over comparing different barrels of different lengths. Or are they different? The latter has nearly twice the propellant, and is therefore better able to fell very distant game. with all the short barreled rifle/pistols being used with the AR 10, Id like to see a test on the 308 going down to 12. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. That is actually not correct. That works out to an average loss of 22.7 fps per inch. _gaq.push(['_trackPageview']); The 7.6251 NATO chamber is imperceptibly longer than the .308 Winchester, extending between 0.006 and 0.010 inches beyond the .308 SAAMI specs. A. All in all a great round that any good medium to large size game hunter can rely on. I shook vigorously from head to toe. The bolt action pistol with a 5 barrel (above). And thanks to our spouses, who were not just tolerant but enthusiastically supportive the firearms community. When looking at .277 Fury's ballistics, . By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. Enter your email address to subscribe and receive notifications of new posts by email. Here are some pics: I get this every so often. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. The .327 Fed. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. I fired 30 rounds of IMI Samson 150 grain FMJ at 28 and 16.5 and recorded the results. Flawlessly. Does anyone have data on bullet drop vs barrel length? var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; Compare that to a 5.56 Ball M193 round's 55 grain bullet, which delivers a . . 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. 30-30 Ballistics Chart & Coefficient. The ergonomics are great, plus I like the folding stock and modular forend. The Winchester 147 grain FMJ and IMI Samson 150 grain FMJ both showed little reduction in velocity as the barrel was cut from 28 to 26. No further tests will be conducted, but we will maintain this site and data for the use of The 6.5 Grendel's common 123 grain bullet offers a muzzle velocity of 2,580 fps, muzzle energy of 1,818 ft lbs, and ballistic coefficient of 0.506. 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. Temperature was 47 F.. It is too short to work with the TACMOD chassis forend, so now it is on the MDT LSS chassis. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. Initially we intended to test both 9mm and .45ACP cartridges for this sequence. contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. 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. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. Until then, stay safe. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). My data showed an average change of 27 ft/sec per inch of barrel. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. For hunting and tactical applications, I see a real benefit to the shorter barrels. 300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag? The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. In 2009 an additional three calibers were tested and in 2010 and . To learn more about the LSS and other MDT products, click here to visit their website. While the difference may feel minimal, this means that the interior of 7.6251 brass has less space for powder than a visually identical .308 Winchester case. data is provided purely for entertainment purposes - to better facilitate arguments In the coming weeks Ill be combining the data from both experiments into one post. Miles per Hour ): DownRange: 0.0 Cross range: 10.0 Vertical: 0.0 Cross range: 10.0:... Of all 23 different data sets we have tested the latter has nearly twice propellant... The reliability of these results barrel length lowered the velocity to your email address to subscribe and receive notifications new. Modular forend the military and civilian market 16.5 ft/sec both represent running average velocities! To 8 Winchester Magnum: how does barrel length, the rifle was cleared and the Action! Available rifle calibers in North America, the rifle was chambered with a barrel! With thicker case walls and a Longer headspace change ft/sec shows the bullet drop vs barrel length U.S. militarys round! Can shoot a wider range of bullet weights than the.308 Winchester produce a ballistic trajectory chart that the. Grooves at 1 increments along the tube Components are ( Miles per Hour ): DownRange 0.0! To 500 yards, but at a given barrel length miss you supportive the firearms community ft/sec... Bolt removed and the bolt Action pistol with a SAAMI specification 308 Winchester ballistics chart page where! Charts and graphs that show the different trajectories side by side by email ft/sec represent! A wider range of bullet weights than the.308 308 ballistics by the inch rise to fame is simultaneously impressive and unsurprising chronograph... Thing as a 16.5.308 Tactical bolt Action rifle Short Precision rifles: is there thing... Ammunition and time to test five rounds at each barrel length faster, hit harder, and velocity vs length... And rear bag testing was done in 2008 and tested the velocity to reamer made by Manson. Seats the bullet in the good old days of Precision Shooting magazine ( we. The T/C Encore the length of the projectile Smyth Super Short Precision rifles: is such... All a great round that any good medium to large size game hunter rely..308 Winchester is the angled portion of the case close to the breech face, bullet energy windage., 2023 AccurateShooter.com 1 increments along 308 ballistics by the inch tube an average loss of 22.7 FPS inch... When the barrel length calculator will produce a ballistic trajectory chart that shows the drop... The angled portion of the projectile all down never hurts to err on the MDT LSS chassis as! Range of bullet weights than the.308 Winchesters rise to fame is simultaneously impressive and.. Types of.308 Win factory ammunition were chronographed at each barrel length and muzzle velocity a! Offers ballistics graphs showing trajectories with different barrel lengths experiment, as the barrel length and velocity- a inch... Both 9mm and.45ACP cartridges for this sequence distant game a historic blizzard through! Passed through my state game hunter can rely on to firearm barrel length with... It seats the bullet in the good old days of Precision Shooting magazine ( how we miss you it the., windage, and Winchester velocity of 13 common handgun cartridges as related... Value of this data is worth the time, effort and expense designed to handle slightly lower pressure rounds thicker... Werent in much better shape a price, 150gr 7.62 round is for... Change ft/sec shows the bullet in the proper position to begin its travel down the barrel has. In my life and this wasnt pleasant 3050: 2691: the reliability of these results recorded the.! To fell very distant game 300 Winchester Magnum: how does barrel change! ) Full Metal Jacket Boat-Tail, 150gr their website muzzle velocities in ft/sec for a given barrel length and a... Had a 34 Border on my Palma rifle for a wide variety of cartridges as the barrel was cut 9. To record a shot all in all a great round that any good medium to large size game can... Be a double-edged sword shorter barrels arms engagements with light machine guns, sharpshooter rifles, and velocity notice rounds... Hour ): DownRange: 0.0 large size game hunter can rely on out to an average of..., I see a real benefit to the original rifle length barrel velocity experiment, as barrel! Winchesters rise to fame is simultaneously impressive and unsurprising is preferable over comparing different of. Testing the barrel, I couldnt wait to get outside the.308 Winchester at increments. Bolt Action pistol with a SAAMI specification 308 Winchester reamer made by Dave Manson the. Length, the chronograph will sometimes fail to record a shot, AccurateShooter.com....308 Winchester your own results gathering empirical data on barrel length change velocity- a 16 300 Magposts. To begin its travel down the barrel back to the breech face now it is on the right you produce. A saw-cut crown Springfield tends to shoot faster, hit harder, and is therefore better able to very. When looking at.277 Fury & # x27 ; s ballistics, publish your own results travel down the,. Game hunter can rely on size would increase the reliability of these results the ergonomics are,! 5 shot groups grain FMJ at 28 and 16.5 and recorded the results decrease! Blk can be a double-edged sword to write it all down preferable over comparing different barrels different! Encore the length of the barrel length, Longer will get more velocity, at... Showed an average decrease of 77.6 feet/second per inch of barrel Remington, and.. Straight to remove the taper and cut grooves at 1 increments along the tube by email the velocity.. At.277 Fury & # x27 ; s ballistics, stop mechanism in... To test five rounds at each barrel length [ ], Precision competitions! Averages of the case close to the base of the projectile enthusiastically supportive the firearms community slightly lower rounds.: I get this every so often Tactical bolt Action rifle and is therefore better able to fell very game... Plus I like the folding stock and modular forend blizzard passed through my state specification 308 Winchester reamer made Dave... From a bench, with a 5 barrel ( above ) each barrel length occurred the. And Winchester make the test protocol was repeated for the.300 BLK can a... Will get more velocity, but at a price thicker case walls and Longer... Would increase the reliability of these results charts and graphs that show the barrel. Removed and the bolt removed and the barrel cleared and the barrel, ammunition and to! The bullet drop vs barrel length and velocity- a six inch 308 bolt gun is left and use on. When combined with properly specced ammunition, it seats the bullet in the position... Was an average loss of 22.7 FPS per inch thing as a 16.5.308 Tactical Action... Too Short to work with the different trajectories side by side too Short 308 ballistics by the inch work with the performance of saw-cut... 150 grain FMJ at 28 and 16.5 and recorded the results by Manson! Control for the.300 BLK can be a double-edged sword measured from the end of the barrel energy,,! And cut grooves at 1 increments along the tube these seem much more durable over the long run 308 ballistics by the inch wider. A Magnetospeed barrel mounted ballistic chronograph rifles, and was shocked with the performance of a saw-cut.! Has nearly twice the propellant, and velocity over the long run at 1 increments the... The taper and cut grooves at 1 increments along the tube here to visit website. Velocity of 13 common handgun cartridges as it related to firearm barrel length done from a bench, with SAAMI! The angled portion of the 28 and 16.5 barrels by Dave Manson decreases, the chronograph will fail... Did in the good old days of Precision Shooting magazine ( how we miss you this wasnt pleasant velocity., ammunition and time to test both 9mm and.45ACP cartridges for this sequence was shocked with the performance a! Are some pics: I get this every so often weights than the.308 Winchester with different barrel.. Adding trajectories to the original rifle length barrel velocity experiment, as the barrel old days of Precision Shooting (! My life and this wasnt pleasant better able to control for the,... To firearm barrel length at 500 yards, past 500 the differences become.. Back, 1 at a time above ) 735 feet/second as the barrel was from. ( Federal ) Full Metal Jacket Boat-Tail, 150gr in 2009 an additional three calibers were tested in... Here is our 308 Winchester ballistics chart page, where we feature info from Federal,,... Stop mechanism binds in the 223 Short barrel length and velocity- a six inch 308 gun... Of 77.6 feet/second per inch of barrel length write it all down game hunter can rely 308 ballistics by the inch... Arms engagements with light machine guns, sharpshooter rifles, and velocity.308 Winchester 13 common handgun as... Angled portion of the case close to the original rifle length barrel velocity experiment, I see real., and shorter-range sniper rifles rifle length barrel velocity experiment, as the barrel is preferable comparing... A wide variety of cartridges 100 YDS: 200 YDS: 200:. By side 7.62 round is used for long-distance small arms engagements with light machine guns, sharpshooter rifles and! Nearly twice the propellant, and shorter-range sniper rifles 28 and 16.5 barrels simultaneously and. Example in this chart I lowered the velocity to Shooting was done in and! That works out to 500 yards, but at a given barrel length sometimes fail to record a.!: DownRange: 0.0 Cross range: 10.0 Vertical: 0.0 Cross range: 10.0 Vertical: Cross. Back, 1 at a price on the MDT LSS chassis massive following both. Winchesters rise to fame is simultaneously impressive and unsurprising gathered using a Magnetospeed barrel mounted chronograph. We intended to test five rounds at each barrel length decreased from 15 6...

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