Need help with 1911-A1 FTRB
I have a friend's 25 yr. old Springfield armory 1911-A1 which has become unreliable of late. It will occasionally fail to return to battery. This happens most often with a full or mostly full magazine.
To try and eliminate some possibilities, we have used both the factory magazine and a brand new Kimber Kim-pro magazine...same results. We have only used FMJ ball 230 grain ammo, but from several different manufacturers (Winchester, Federal, Remington)...same results.
It definitely feels like there is some hang up, or friction as the slide closes on a round...kind of a "ka-chunk" that is noticeable. I have used 7 rounds to cycle through for testing by manually working the slide, and they have all had the projectile shoved further into the case by about .070" for some reason.
I have attached pictures of what it looks like when this happens, the round seems to enter the chamber about halfway and then hang up. I have looked into the chamber for roughness or burrs...appears smooth to me. If I push lightly on the back of the slide, she goes home just fine.
I'm hoping someone will have some suggestions on what to look for. Thank you!
"This hand, hostile to tyrants, seeks with the sword a quiet peace under liberty", -Algernon Sidney, 1659