I got a Colt Combat Command XSE in .45 ACP a few years ago as I remember it came with two magazines. At least one was a Colt Branded 8-rounder, the other I cannot remember if it was a seven round or another 8. I bought a few more magazines some 8 some 7. In any event, I found that I was getting the dreaded second-from-the-last failure to feed syndrome. Being a member then of the 1911 forum, I read there where that problem is caused by no dimple [sic, "tit"] on the magazine follower and that they considered 8 rounders to be problematic. To shorten a long story, I swapped out the followers of the eight rounders for springs and followers with tits. Problem solved. Aside from that, I found that Metalform and MecGar both make magazines that function correctly in my Colt. If you are enthralled with the 1911 platform, you may do well to join the 1911 forum...they tend to have more experts on the 1911 over there.