I use 5.4 of Clays International (still have around 12 lbs to use up) under a 230 MC and load to 1.24-1.25 with a Lee carbide taper crimper (0.469 crimp OD), Works in every 45 I have (645; 745 (2x); Norinco 1911A; Walther/SW 99 and Glock 21). Clean and accurate. One of these days I will chronograph it but it should run around 800 fps. Dave_n