I have done some workup on my 460 Rowland right now I only have the standard glock barrel and a 22lb recoil spring so Super is as far as I feel safe pushing it. So far with these loads their are absoutely no signs of excessive pressure but they are most definately a handful. Hopefully my KKM barrel will be here by the end of next week and I can continue my workups. Any way here is what I have so far all loads are with Rowland brass trimmed to ACP lengths CCI primers and Power Pistol powder. 230 XTP @ 1150 FPS at 25yds into milk jugs 95% weight retention. 185 XTP @ 1200 FPS at 25yds into milk jugs 96% weight retention. I see either one of these loads being viable for a south georgia deer with a good broad side shot, and the 230 grain load should easily take a hog. Visually the 230grn XTP is much more impressive on the jugs than the 185 at 660 FPE.