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Im crushing it with a 147 lead bullet, over power pistol.
They hold a 1.5" group at 75 feet out of a 4.25 1911.
Power Factor of 147.6 (average)
9mm of course
Power factor for BOTH IDPA and USPSA is 125 I believe.
they aren't powder puffs, but will cycle just about anything.
Hope that helps.
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