Hey guys I am starting a project and wanted to share. My kids have enjoyed (and been successful) hunting with a H&R Handi Rifle in .357 and I wanted one in .45 acp. The only thing I could find was a barrel insert for 12ga shotguns. Well we picked one up and after multiple different loads at acp levels i decided to move into plus p and super levels because of the amount of support on the case head. after contacting the manufacturer and finding that the same barrel blanks are used for acp as are for 45-70 and 44 mag I began to develop some loads. Here is the case head support.