Good info all!! I took mine apart after 100 rounds but not since. Sounds like I probably should just to check the small parts.
Mine has been 100% with buck and ball, haven’t tried any lighter loads yet.
I ended up replacing all the springs except the recoil spring before taking my Turknelli M2 clone out. Spent about 2-3hrs filing off any burrs, honing the metal on metal interfaces, and cleaning the parts, then re-oiling. Went through 75ish rounds, combination of heavy game loads and the last 25ish were birdshot. Ate everything except I had one time where the light target shell extracted but it didn't chamber the next.