ceejayex Posted March 23, 2012 Share Posted March 23, 2012 I know I've seen a topic on here about power factor, but I'll be damned if I can find it. I'm shooting a 40 S&W in 3 gun. What is the formula again? Thanks Link to comment Share on other sites More sharing options...
Sarge Posted March 23, 2012 Share Posted March 23, 2012 Weight of bullet times velocity equals power factor. 165 bullet at 1000 fps is 165 power factor after dropping the 0's Link to comment Share on other sites More sharing options...
kevin c Posted March 23, 2012 Share Posted March 23, 2012 Major threshold in the US in 165. Minor threshold is 125. Link to comment Share on other sites More sharing options...
ceejayex Posted March 24, 2012 Author Share Posted March 24, 2012 Major threshold in the US in 165. Minor threshold is 125. Is PF something I have to declare before shooting? Can I be over the major? Thanks Link to comment Share on other sites More sharing options...
Sarge Posted March 24, 2012 Share Posted March 24, 2012 Yes you declare PF and yes you can go over a PF threshold. NO LIMIT! Just don't blow yourself up please. Link to comment Share on other sites More sharing options...
ceejayex Posted March 24, 2012 Author Share Posted March 24, 2012 Yes you declare PF and yes you can go over a PF threshold. NO LIMIT! Just don't blow yourself up please. No, no worries. Thanks Link to comment Share on other sites More sharing options...
blu46and2 Posted March 24, 2012 Share Posted March 24, 2012 Most 3-gun matches don't care about power factor, at least for the pistol I think USPSA is the only one that uses that method of scoring in 3-gun/multi-gun matches. Link to comment Share on other sites More sharing options...
TerryYu Posted April 15, 2012 Share Posted April 15, 2012 Just make sure when you declare a power factor you are sure you're above it! Larger matches will chrono you and if you are below you will have to either shoot minor (less points) or subminor (no points!). Build a buffer into your loads. You'll chrono different when it's hot vs cold/high vs low elevation. Link to comment Share on other sites More sharing options...
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