Brian Pearce did an article in Handloader a couple of years ago about 200gr bullets in .45acp. He said PP gave +P performance at standard pressures. He used several different bullets and powders, and it was a good article. I prefer 230gr for .45acp in my autos and heavier swc in revolvers. PP was originally a noncannister grade powder called BE84.

see below.

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dd884
JMHO-YMMV