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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
1-7 twist too much ????
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<blockquote data-quote="J E Custom" data-source="post: 817160" data-attributes="member: 2736"><p>A gain twist barrel is one that starts out at the breach with a slower twist and as the bullet</p><p> accelerates(Moves down the barrel) the twist rate gets faster.</p><p></p><p>Example breach end twist rate is 1 in 10. Muzzle end twist rate 1 in 8. I am not sure what the extreme limits of difference is but the ones that I have seen have been 2 to 4'' different from </p><p>one end to the other.</p><p></p><p>These gain twist barrels were for 4200 ft/sec + velocities and used where normal bullets would </p><p>not hold up to starting inertia.</p><p></p><p>I have a .22 WSSM with a 1 in 15 that shoots great at 4400+ft/sec without bullet damage. I still don't no how fast I can push a bullet in it before it starts to destroy them.(I reached 4500 ft/sec</p><p>and it did not shoot any better or worse so I settled for anything under 4500 ft/sec. this rifle would have been a good candidate for a gain twist barrel but I decided to go with the 1 in 15 instead.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 817160, member: 2736"] A gain twist barrel is one that starts out at the breach with a slower twist and as the bullet accelerates(Moves down the barrel) the twist rate gets faster. Example breach end twist rate is 1 in 10. Muzzle end twist rate 1 in 8. I am not sure what the extreme limits of difference is but the ones that I have seen have been 2 to 4'' different from one end to the other. These gain twist barrels were for 4200 ft/sec + velocities and used where normal bullets would not hold up to starting inertia. I have a .22 WSSM with a 1 in 15 that shoots great at 4400+ft/sec without bullet damage. I still don't no how fast I can push a bullet in it before it starts to destroy them.(I reached 4500 ft/sec and it did not shoot any better or worse so I settled for anything under 4500 ft/sec. this rifle would have been a good candidate for a gain twist barrel but I decided to go with the 1 in 15 instead. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
1-7 twist too much ????
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