I had the same problem with LRN 115gr bullets. The problem was on my Kel Tec PF9. My original OAL was supposed to be 1.125", it wasn't till I got down to about 1.100" that the round would 'ker plunk'. I ended up making them all 1.095". I was using Power Pistol, starting load at the 1.125" was 6.0gr if I remember right, got a 'recipe' from Lyman that said using 5.0gr @ 1.060", I'm 5.2gr @ 1.095". No chronograph yet so I don't know how fast it is. There aren't any signs of overpressure that I can see, they feel about the same as Wal Mart stuff, maby a bit more 'snappy'. My Sigma didn't have any issues with the 1.125" OAL.
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