Here's what I use with LRN bullets:

95gr. Laser Cast or Missouri Bullet LRN
3 gr. Win-231
Win Primer
Mixed Brass
OAL: .957
About 700 +/- fps out of my Kel-Tec P3-AT

I get no feeding or firing failures with this load and LRN bullets.

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"Onward thru the Fog"