[Alma]

I haven't but it could be related to the specific spring or follower. You can take the slide off and test the magazines with one round to see if the ledge on the follower touches the slide catch.
If it does you could try swapping Springs and followers around to isolate. Likely a couple of passes with all file would correct this.

 

[DPeter85]

So the slide locks back while there's still one in there? That's really strange. Something must be engaging the follower to slide catch interface.

 

[mbonadio]

Yeah. Slide locks back and one bullet still in magazine. I can cycle rail and it will feed and fire. Cant tell what catches. Other 2 mags dont have this issue. So i know its not the gun itself. Small annoyance for now...

QUOTE=DPeter85;2268794]So the slide locks back while there's still one in there? That's really strange. Something must be engaging the follower to slide catch interface.[/QUOTE]

 

[TheEyeronic1]

i'll buy the magazine from you.

 

[mbonadio]

Pm me a reasonable offer. I was just gonna have it replaced by sig. But I have 3 good ones so if you want it that's cool. I would be curious if it behaves the same in another 320sc..

i'll buy the magazine from you.