I experience jams every now and then in both my Gold Cup Mk IV Series 70 and also my Springfield GI .45. The cause? My handloads - - poor taper crimp is almost always the problem. I usually shoot lead bullets, either 230 grain RNL or 200 grain LSWC. If I get my dies set up correctly, both guns feed flawlessy.
I don't think that I've
ever had a malfunction of any sort with factory ammo. Being a cheapskate, however, most of the .45 rounds I fire are handloads.
I don't blame our service personnel for wantinga .45. A good 1911 .45 would be my first handgun choice in a bad neighborhood.
By the way, did you ever buy that Gold Cup you were looking at earlier this month?