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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to test bullet expansion?
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<blockquote data-quote="LongBomber" data-source="post: 2351131" data-attributes="member: 14435"><p>The bullet rpm does not slow as fast as the velocity. to put it in simple terms with a 1:8 twist barrel has the bullet leaving the barrel making one rotation every 8". At 500 yards with the velocity slowed significantly and the rotation slowed slightly the bullet maybe doing one rotation every 5".</p><p>It is easy to duplicate the lower velocity, keeping the rpm (or twist rate if you think of it that way) while dropping the velocity is tougher.</p></blockquote><p></p>
[QUOTE="LongBomber, post: 2351131, member: 14435"] The bullet rpm does not slow as fast as the velocity. to put it in simple terms with a 1:8 twist barrel has the bullet leaving the barrel making one rotation every 8”. At 500 yards with the velocity slowed significantly and the rotation slowed slightly the bullet maybe doing one rotation every 5”. It is easy to duplicate the lower velocity, keeping the rpm (or twist rate if you think of it that way) while dropping the velocity is tougher. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How to test bullet expansion?
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