Bersa behaving strangely

[Embalmo]

Guys,

My Bersa UC9 is doing something that I have never heard of. The slide is locking back while there is still ammo in the magazine while a spent case stays in the barrel. For a while I had thought that my thumb was pushing up the slide lock, but it's doing it just about once every rang trip. Have any of you guys experienced this?

Embalmo

[atxtj]

Have you tried another magazine? Ammo too hot possibly?

[Embalmo]

I've certainly thought that the magazine might be the problem, but it doesn't do it often enough. I'm going to start using the "other" magazine for my next trip (tomorrow). It's been doing it over a period of months while using Wal Mart Winchester cheap 9MM. The goofy thing is that the spent case is dead and flush inside the chamber and it has only happened along with the slide locking back with rounds in the magazine. I'm hoping that the guys that do my warranty work have seen this before.

Embalmo

[speedsix]

...are there any rip/tear marks on the case where the extractor tried to pull the shell out???

[RECIT]

I'm thinking the extractor may be worn or out of adjustment. That would be the first thing I would check after I cleaned it and shot it with the other mag. Only change one variable in the experiment at a time or it can be hard to decipher results. Take a paint pen or colored sharpie marker and label your mags 1,2,3 ect. Take notice after a few hiccups which mag it has happened the most. Then if it happened with all mags, look at something internal like the extractor.

[nuparadigm]

I'm thinking the extractor may be worn or out of adjustment. That would be the first thing I would check ......

Same here. You might want to take an old toothbrush to the extractor lip. If that doesn't solve it, then either the extractor is loose (I'm not familiar with the physiology of Bersas) or somehow out of alignment. The other comments about magazines and too-hot ammunition are "could be" causes, but it really sounds like an extractor problem to me.

[atxtj]

I'm thinking the extractor may be worn or out of adjustment. That would be the first thing I would check ......

Same here. You might want to take an old toothbrush to the extractor lip. If that doesn't solve it, then either the extractor is loose (I'm not familiar with the physiology of Bersas) or somehow out of alignment. The other comments about magazines and too-hot ammunition are "could be" causes, but it really sounds like an extractor problem to me.

Indeed, I failed to catch the spend brass staying in the chamber part.