My 935 use to function fine with everything but now sometimes it wont cycle shells. Most of the time it will eject the fired hull but it will not pick up the next round.
This gun is about.7 yrs old so im sure its normal wear on a spring or something. Any ideas?
So many things it could be. Could just need to be stripped and throughly cleaned. Could be a weakend magazine spring. Could be a bent shell stop.
Have you stripped it down and cleaned it lately? Could be your bolt not fully cycling or the load lift gate not functioning properly.
If you know someone with the same gun, try swapping out the trigger assembly and see if that fixes it. That will narrow it down. There are some plastic parts in that assembly and they don't last forever. If that is your issue, compare all the parts in your assembly and the one that works. You might not be able to tell, but then you might. Probably something pretty simple.