Quote:
I have a finnicky P6 but she will feed Rem UMC 115gr JHP ammo
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+1 with what Chesster says.
I have a 83 P6 with the old fashioned ramp shown on the right in the pic higher up in the thread. In mine Hornady Critical Defense was the best of the modern JHP's but still jammy. I never tried PowR Ball.
I believe the Remington designator for the UMC round Chesster is talking about is L9MM1. The same shape and weight round is sold under the Remington label as R9MM1. The ballistic tables I've seen for both rounds are identical which leads me to believe that the rounds are highly similar materially although there has to be a reason the UMC is half the price. I practice with the UMC and carry the Remington.