my only experience with comped .45's coes from my early days with the single stack auto's back then I ran the H&G 68 damned near exclusively, and at the then 175ish PF, i ran WST, which for me, had a soft felt recoil while still burning enuffto work the comp effectively, butthen again this was in an auto, i have no idea what it would do in a comp'd revo...i still have some ofthe rounds i made backthen and shoot em in a standard 625, andthey are fiesty recoilwise, i've tried to get 155's to work, and yes to a point, they work, lighter, more gas pressure to work the comp, but less of a bearing surface(i was useing a shortened version ofthe H&G 68)