My Colt LW Gov has begun having some malfunctions.
The slide will prematurely lock back and the last round will be floating in the ejection port or halfway in the chamber.
It's like the magazine has spit the round out and the follower activates the slide stop lever.
This happens with both the factory Colt 8 round mags and Wilson 47D 8 round mags.
It's happened with both ball and HP rounds.