3" #4 Buck - more of above.
3" 1-1/4oz slugs - WHOA MOMMA, no shoulder left and The Problem (described below).
2-3/4" anything - no problems, works like a champ.
The Problem - On every single 3" slug I put through it the bolt and slide flew back, left the hull in the chamber, and I had to turn it over to pour the empty out and then cycle it again to get the next round. The elevator was down like ready for the next round but the ejector didn't eject, so the next round was still in the magazine.
This is a "military-grade shotgun" and I would expect it to eat just about anything, but to mess up on the worst recoiling of my ammo puzzles me. I sent Mossy an email and they want me to send it in. Has worked fine on all the other ammo since then so I don't want to send it back, but this really perplexes me. Why this problem on that particular round?
Ideas, witty comments, insults all welcome as usual.
Cartridge separator. Mossberg will send you shipping/authorization number. You will need that. Ships to Rio Grande Valley. Turn around time 30-60 days, normally.
Is the barrel stamped for 3” shells? If yes I’d try another brand. If the problem continues take it to a competent gunsmith. You may have a defective extractor.
Out in the west Texas town of El Paso I once fell in love with a mexican squirrel.
Did you load the shells into the magazine and pump them into the chamber?
This may sound a little dumb, but are you sure those aren’t 3 1/2 inch slugs? Just a wild thought.
My first instinct would be to check the chamber. What you describe is what happens when you put 3” shells into a 2 3/4 chamber.
You can get away with it with shot or buckshot, but when you put in slugs, look out.
Big firearms, marginal results.
Personally, I'm ok with knowing that I'm gonna get hurt if I mash that bang switch, because the person on the other end will get hurt much worse, and it makes me mindful.
You need that serviced by a competent gunsmith, Mossberg or other. Your firearm should perform as flawlessly as possible and, in support of that, you need to know that you are doing everything right. A failure like this could lead to a greater failure when you can least afford it. Get it looked at.
Do you have a choke in the barrel ?
Only use a cylinder choke or a slug choke with a slug.
My 590a1 with ghost ring sights has always worked fine but I’ve never put 3” slugs in it.
Good to know, I might have to go get some slugs.
I’ve put 3” slugs through both my spouse’s 590 and my 500 with no issues. The only fte issues have been with light target loads. If you don’t want to send the gun back to Mossberg, find a good local gunsmith.
That ain’t right. I’ll also vote in the “GET IT FIXED” column.
I’m very good with this gun, and I’ve run into something similar.
first off, the extractors. There are two rods that sit on the sides of the body, they have curved ends to capture and divide the magazine pay-out.
if the magazine tube has been extended, the tube spring may not have been replaced. This too I have run into that prevented the next round from ejecting from the magazine into the loading cradle.
If you need specific descriptions, pictures or video please let me know. I would be happy to provide it.
I would send it to Mossberg with a short list of what is wrong.
I bought a S&W auto pistol not too long ago which was missing a main component (the extractor). Hard to believe it got by quality control.
I will say dealing with the company was a real pleasure. They sent me a prepaid label and I got it back working perfectly within a week. Oddly enough it went to Maine instead of Springfield.
I think you need to get the terminology correct. Hulls get extracted from the chamber and ejected from the receiver
Is the hull being left in the chamber of the barrel. Or is the hull being partly extracted from the chamber but not being ejected from the receiver.
Then is the next round not coming out of the magazine onto the shell lifter so it can be placed into the barrel.
It sounds to me your get partial extraction and no ejection induce by the extra recoil of the 3 inch mag ammo. This is most likely caused by not holding onto the forend firmly.
Then because the side isn't being pull sharply all the way to the rear it dosen,t' have a chance to trip the shell latchs and allow the next round to leave the magazine.
so when you close the action and bring the forend back you are allowing the action to trip the shell latch's allowing the next shell to come out of the magazine.
Go to www.shotgunworld.com and their forum. They have a forum for Mossbergs and a member there is a 930 expert.
My guess? The guy you shoot inside your house will not know whether you shot him with a 3” buckshot magnum or a 2 3/4” quail load.