For the last five years one of our top selling lines of ammunition has been our hand loaded .375 H&H ammo. And I get asked all the time "what is the muzzle velocity on that ammo?" - there are several factors that come into play when we get a velocity, and even rifles with sequential serial numbers can have a very different muzzle velocities. The barrel length is the very first and most significant... the longer the barrel, the more muzzle velocity ammunition will generate. A rifle with a tight chamber will have higher pressures, and generally higher velocities. And the list of factors gets smaller but it does go on... so NEVER trust the velocity listed on a box of someone's ammunition - always shoot the ammo over a chronograph.
These are two targets for two different .375 H&H rifles... the 300 Gr Barnes TSX bullets were fired out of a Bergara Premier Series Canyon with a 24" barrel. Yes, that is a great three shot group and the velocities were 3590 FPS. Accuracy and Great Velocity means tremendous energy... but in a 22" rifle this would have maybe shot 2525-2550 FPS range.
The other target was our 300 Gr Swift A-Frame shot out of an American Precision Arms rifle with a 24" barrel at 2630 FPS... the three shot group was amazing. The correction brought the final shot to center. Once again, great accuracy, amazing velocity and tremendous down range terminal performance.
All of that said, these loads would go out with a velocity range on the ammo box of 2550-2625 FPS as an average muzzle velocity range. We sell a lot of this ammunition and it has tested within that velocity range in 90% of the rifles. Once in a while a gun shoots it faster, and some shoot it slower... but the gun generally is the primary factor in determining the final and actual muzzle velocity of our well tested and developed ammunition.
** Side Note: Take a ballistics app and run the numbers of the difference between 375 H&H 270 Gr and 300 Gr Swift A-Frame bullets. I am always amazed at how few people order 300 Gr bullets believing that it generates significantly more energy. I think more people might buy 270 Gr bullets if they knew how much more Ft/Lbs of energy the extra velocity generates.
These are two targets for two different .375 H&H rifles... the 300 Gr Barnes TSX bullets were fired out of a Bergara Premier Series Canyon with a 24" barrel. Yes, that is a great three shot group and the velocities were 3590 FPS. Accuracy and Great Velocity means tremendous energy... but in a 22" rifle this would have maybe shot 2525-2550 FPS range.
The other target was our 300 Gr Swift A-Frame shot out of an American Precision Arms rifle with a 24" barrel at 2630 FPS... the three shot group was amazing. The correction brought the final shot to center. Once again, great accuracy, amazing velocity and tremendous down range terminal performance.
All of that said, these loads would go out with a velocity range on the ammo box of 2550-2625 FPS as an average muzzle velocity range. We sell a lot of this ammunition and it has tested within that velocity range in 90% of the rifles. Once in a while a gun shoots it faster, and some shoot it slower... but the gun generally is the primary factor in determining the final and actual muzzle velocity of our well tested and developed ammunition.
** Side Note: Take a ballistics app and run the numbers of the difference between 375 H&H 270 Gr and 300 Gr Swift A-Frame bullets. I am always amazed at how few people order 300 Gr bullets believing that it generates significantly more energy. I think more people might buy 270 Gr bullets if they knew how much more Ft/Lbs of energy the extra velocity generates.
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