The only issues I've had were 2-3 failures to run completely into battery, but they were with my handloads. I use moly coated lead 230gr RNFP's and they catch on the curve of the slug. That's out of a sample size of maybe 100 rounds with a recipe I've used for 2,000 rounds through my Kimber 1911. Everything jacketed has been good to go.
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