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Inputs

* This is an appoximation based on roughly 2800 FPS, and standard atmospheric conditions

Results

Enter inputs, then click Calculate.
calc
Suggested minimum twist (SG = 1.5)
Optimal twist (SG = 2.0)
Bullet length (calibers)
Current twist (calibers/turn)
PRO idea
Add velocity and altitude corrections as an advanced mode.
idea
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