I finally got a chance to go out shooting last Friday, and I'm having issues with my 1911. I tried shooting Magtech 230gr., HSM 230gr., and even a dozen Fed. Hydra Shok's, in two different mags (the one it came with, and a Chip McCormick). The first mag (HSM's with the Chip McCormick) ran just fine. But after that, my gun was jamming almost every other round. The rounds were getting caught on the feed ramp. The HSM's were burning pretty dirty, but would that be enough to cause these jams? Every time it jammed, I only had to pull the slide back and let go, and the round would chamber just fine. I bought this gun used a couple years ago, and I have no idea about the round count or anything else about it, other than it's a series 80 1991. I think I may try putting in a new recoil spring and trying a different mag. Any other ideas?