packed Posted March 18, 2007 Share Posted March 18, 2007 Went shooting today and used my chrono for the first time. I was getting around 950fps on some can someone please tell me again the formula for getting the power factor. Thank you. Link to comment Share on other sites More sharing options...
ChuckS Posted March 18, 2007 Share Posted March 18, 2007 Went shooting today and used my chrono for the first time. I was getting around 950fps on some can someone please tell me again the formula for getting the power factor. Thank you. Velocity (fps) * Bullet weight (grains)/1000 let's say you were shooting 180 grain bullets. PF = (950)*(180)/1000 = 171 Later, Chuck Link to comment Share on other sites More sharing options...
Merlin Orr Posted March 18, 2007 Share Posted March 18, 2007 (edited) 950 (FPS) X bullet weight....= PF if you move the decimal a few places.. Edit to say...What Chuck says... Edited March 18, 2007 by Merlin Orr Link to comment Share on other sites More sharing options...
RePete Posted March 18, 2007 Share Posted March 18, 2007 Assuming a 180gr bullet. 950 x 180/1000 = 171PF. Link to comment Share on other sites More sharing options...
packed Posted March 18, 2007 Author Share Posted March 18, 2007 Thank you guys for the quick response!! Link to comment Share on other sites More sharing options...
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