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.
Wow. A lot of work.
I think I will just buy a Ruger.
Load bullets, pull the trigger, bang - first time, every time.
Reloads, good ammo, you name it.
“1911s are notorious for requiring much more break-in effort than other pistol designs.”
Not so much anymore, I had none in either my Series 70 or Series 80, none in any of my SAs, and none in my TR. breakin jams nowadays are a rare occurance in any quality made pistol.