Well gentlemen and ladies my wife is going to let me cast for her 1911 Springfield a1 9mm .she noticed I finally got my 45 running with my own cast bullets. I am tickled it has been a whole new experience for me ,I have just started casting.reliable functioning and no leading.I have two saeco bullet molds 2 cavity 185 swc 4cavity 200swc. So that is my only experience,conserding aluminum arsenal 5 cavity 358-124 gr tc .l nead to size to at least .357 and would like to be able to go to .358 for her astra a 70 as well. I am gental on my molds ,but possibly my ignorance could damage the aluminum mold. I don't hit with stick or bang on it but never used different molds.if you have some experience with arsenal molds please advise.thank you New member.