I stuff my go to mags with 124 +P HST, havent chrono'd it yet but they provide a good bit of thump, run well, amd shoot better. I also have some PPU 124 grain that SGAMMO had, it is a little hotter and rumor is it'll push 1300fps out of a 8" barrel, also unconfirmed. Ive shot the PPU quite a bit but normally I run S&B or whatever was cheaper that $10/box when I bought it.