You know, some guys have zero issues and swear by them and others have lots of problems.
a
930 SPX: would only hold 5 shells instead of 7 in tube. There was a massive lip on the stock Choate extension where either the shells or the spring would hang up. I ground it down but it still wouldn't run right. So I replaced that with a Nordic Extension. The mag feed problem went away but it wouldn't cycle reliably. I had a couple hundred rounds through it too. It would be fine on one range visit and not the next. So I really made sure it was clean and oiled in the right spots and it was still hit or miss.
930 Home Security: I thought I just got a "bad gun", so I bought a 4+1 home security model and built it up. I put a Nordic +2 on it and didn't have any mag problems. This one wouldn't release shells into the chamber, so I polished the shell stop. I found with this one, if I cycled Remington ammo more than a few times the shell rim would actually get deformed by the shell stop and not feed. I made sure my mag spring was a proper length and actually experimented with multiple lengths. I got it to run reliably for awhile by just not cycling ammo through it and avoiding Remington ammo. Then it started choking again. I noticed the piston spring (the heavy one inside the piston) was scraping the heck out of the mag tube, so I trimmed that down and polished the tube. It ran well for awhile, then started choking again. Well I'd never completely taken the piston apart and it was admittedly pretty fouled up. So I cleaned the heck out of that and it still was hit or miss.
There you go, that's my experience with Mossberg 930s. I don't rip on them, but i think their quality control is severely lacking. For a 3 gun shotgun, maybe they are great. All my guns are for defense first and range fun 2nd, so I have to have reliability.
Probably spent 1200/1300 dollars on those two guns with all the different parts, traded/sold them for probably half that. Moral of the story, I should have just bought an FN SLP or Benelli in the first place.
That being said, if you're happy with yours, cool! Glad it works. It is a neat gun, soft recoiling and fun to shoot. I have to say that I am done with Mossberg shotguns though. I can't even bring myself to buy a 500/590.
Cool, thanks for that. I'll need to get a bunch of ammo and really test this one.