I had the same issue with the hornady. I think the kahr's have tight chambers. I have had a lot of fun reloading for both my cw45 and cw40. Some bullet shapes just would not work at all. The ones that did I really had to play with the OAL and crimp to make them work. If loaded for the kahrs the loads would run in all other guns but starting with a glock or 1911 not a chance.