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Old 10-27-2017, 02:14 PM
Randy Robinett Randy Robinett is offline
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Join Date: Nov 2007
Location: Iowa
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Quote:
Originally Posted by lpreddick View Post
The jacket was the same as a bullet made with a closed meplate and it was stable in the same 14 tw 6 BR.
But, did not the plastic (or, other material) tip make the bullet longer? That is the issue on a .22 Cal. bullet, increasing the length by a mere 0.060" dictates a 1.0" faster twist rate! Read Modern Exterior Ballistics, or, the complete works of Brian Litz, or other readily available works regarding exterior ballistics. RG
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