DefenseReview.com (DR): An online tactical technology and military defense technology magazine with particular focus on the latest and greatest tactical firearms news (tactical gun news), tactical gear news and tactical shooting news.
I was talking with one of my brothers about some different calibers and velocities. Something we often talk about. This led to the IPSC’s Power Factor, which is simply Bullet Weight in Grains, Times Velocity, Divided by 1,000. This is an easy formula that one can use when comparing loads… but doesn’t take into effect Caliber. W x V / …
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