This doesn't specifically address the OP inquiry, but I have the Springfield Milspec parkerized, and a Colt 1991, blued. The slide operates a little slicker on the Colt, but I haven't fired it very much. I haven't yet done a side by side comparison for accuracy, but the Springfield is much more accurate than I had expected. Never had a jam with either, but iIve only used factory 230 gr. FMJ. My two cents, for what it's worth... Need to feed them some JHP and see what happens.