I use the same 200 gr lead or coated rnfp in both my .45 acp and .45lc with no problems. My slide/ barrel of my 1911 is original Colt while the frame is an old Essex. The only issues I've had is with the assorted range brass I've accumulated and my AR .45s that I shoot that are very rough on the brass. To be able to use my reloads in any of my .45s, carbines, revolvers or 1911 pistols, I run them through a lee bulgebuster die that irons out the case of the reload and case rim so that they drop right in a check gauge. I also bought 10 chip McCormick mags to use for Wild Bunch shoots years ago and have had no mag related problems. The majority of 1911 feed issues are directly related to the magazine but the ammo can't have any issues either.