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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What fps do I need to get a 180 grain Barnes TTSX bullet to expand properly?
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<blockquote data-quote="FearNoWind" data-source="post: 1155407" data-attributes="member: 50867"><p>Bullet expansion characteristics, in addition to the bullet's design, include factors of velocity combined with target density. The bullet's expansion relative to its velocity is not directly proportional to it's muzzle velocity'; it's relative to its velocity at the target. The target density would, obviously, depend on what the bullet comes into contact with while entering and passing through the target.</p><p>Not at all a fair comparison, but as an example taking it to extremes, your bullet is unlikely to expand much as it passes through a soft cardboard backed target during load development. But when it hits the berm it flattens out very well.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 1155407, member: 50867"] Bullet expansion characteristics, in addition to the bullet's design, include factors of velocity combined with target density. The bullet's expansion relative to its velocity is not directly proportional to it's muzzle velocity'; it's relative to its velocity at the target. The target density would, obviously, depend on what the bullet comes into contact with while entering and passing through the target. Not at all a fair comparison, but as an example taking it to extremes, your bullet is unlikely to expand much as it passes through a soft cardboard backed target during load development. But when it hits the berm it flattens out very well. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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What fps do I need to get a 180 grain Barnes TTSX bullet to expand properly?
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