Azar wrote: |
The JBM site is an excellent resource, although it does require to take quite detailed measurements of the bullets. You can also download an excel spreadsheet called something like "Bullet stability and twist estimator" from here: drop.io/unclenick A fine gentleman by the nickname of Unclenick on The FiringLine Forums created it and put it in his online file repository. It is based on Don Miller's March 2005 Precision Shooting magazine article. The bullet gyroscopic stability factor "s" must equal 1 or higher for a bullet to be stable, with 1.5 being "optimal". |
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