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#9 | |
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User
Join Date: Jul 2003
Location: New York, NY
Posts: 1,579
Thanks: 2,154
Thanked 402 Times in 251 Posts
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Quote:
While developing a load, starting low and working up, you eventually reach a spot at which your load is most accurate. Adding more powder, after this point, makes your groups spread out rapidly to the point that you are not even on the paper. There is a formula for determing proper twist, the Greenhill Formula. Velocity is a major factor in this formula. Sieger |
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