I have a Colt 1911 with a comped barrel. It is new to me and has started not cycling. I thought it was due to not having enough power in the loads. I loaded some hotter and tried them today and am getting the same results. It has a reduced power recoil spring and the previous owner used 4.2 gr of Titegroup and I had it all the way up to 5 gr. It seems to me like it is the cocking of the hammer that is holding it up. I have to manually cycle the slide for every round and it chambers and closes just fine.