Thanks Joe A,
That is very interesting about the .50 Power Stem, I talked with someone else on the P.S. and he said that he had heard they work really great in .52 but not .50. I think that I probably had better rephrase that question for just the stock breech plug. Have you had a chance to experiment with the Barnes/Knight SBT either .245 or .285 loads? That was the round that I was thinking of trying first.

Mike