Chuck Chamblee
Copper BB
I have a Mossberg 930 that has been a bit problematic lately. Most of the issues I have been able to resolve by keeping it cleaned after each shooting session (especially the gas system). But one issue that keeps rearing its head is a feeding problem with 3" shells. I've tried 3" Federal and 3" Winchester Super-X, both slugs and buckshot, both have the same issue. When I fire the shotgun with the 3" shells, the action appears to cycle properly, ejecting the fired shell and reseating the bolt forward as it should. However, the next round in the mag tube never gets by the shell retainer, never positions itself under the bolt for chambering. If I draw the bolt back manually, the next shell is released from the tube, drops in place, and is chambered when I release the bolt. Fire the next shot, same issue... next round never comes out of the mag tube, chamber is empty. Manual bolt pull and release successfully chambers the next round. I can go through all six rounds in the mag just like this, none will feed when the gun is fired, but feed fine upon manual bolt cycling. The 2-3/4 shells work just fine all day. Any ideas where to look for the trouble?