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Hank45
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rate of twist
Mar 23rd, 2014 at 7:16am
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I am using Paul Mathews rate of twist calculation. Do I use the 150 or the 125 figure in a green mountain barrel with a 9.5 rate of twist to find the length of the bullet?  Thanks Hank45
  
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MikeT
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Re: rate of twist
Reply #1 - Mar 23rd, 2014 at 9:40am
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It depends on how far you are thinking of shooting.
150 is probably good for schuetzen.  I use 135 in the greenhill formula for BP mid-range bullets.

Why not use what is working for those that shoot that barrel twist in their rifles?

Keep on hav'n fun!
MikeT
  
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