HP-38 or Win. 231 powder is all I use in my handgun calibers. I reload 9mm with Berry's 115 gr plated (4.6gr. HP-38), .38 Spcl, .44 Spcl and .45 ACP with great results! It's nice not to have to have four different powders for four different handgun rounds, and they all shoot well. The .44 Spcl rounds in my SuperBlackhawk are like a lazer and so are the .45 ACP rounds in my Les Baer.