Sometimes on a 1911, it becomes finicky about the type of ammo you feed it. Try to feed it something like a truncated cone or a hollow point round, it fails to feed. Feed it 230gr ball, and it might work just fine.
Sometimes, it can be the lips on the mag and how the mag presents the round to the feed ramp.
Debur and polish, debur and polish. When you’re positive you’ve got it all perfect, polish everything 3 more times. If you really know what you’re doing(or don’t mind damaging a few parts and starting over with new ones if you screw up) you can alter the bevels on the extractor and the slope of the feed ramp...ever so slightly. Then polish 3 more times.
Then take it to a range and shoot 500 rounds through it. This might take awhile. Then take it apart and inspect all the wear points, clean until spotless, and re-polish where necessary.
Then shoot another 500 rounds and clean until spotless
If it still jams, get rid of it.
My experience is that most jamming problems can be cured with an extensive break in procedure...assuming it’s not a faulty magazine. 1911s are notorious for requiring much more break-in effort than other pistol designs.
Zactly.
Sometimes a gun needs a little work on the ramp and you have to know what works in yours.
My Kimber loves everything and after 4000 rounds I had only one stove pipe on me.
I figured out why, the other day and shouldn’t happen again.
My Colt 1911 doesn’t care for hollow points and I haven’t gotten around to getting that fixed, because I love the Kimber.