EvilBetty Posted December 31, 2011 Share Posted December 31, 2011 I have a new Mossberg 930 I bought during one of Cheaper than Dirt's sales. When I first got it I took it to the range, just to fire it a bit. Put a box rounds of Federal and Remington (Wal-Mart 100pk 2 3/4", 1 1/8th 7.5oz stuff) though it without an issue. I brought it home put my Nordic +5 tube on it. Using Remington dummy rounds began practicing my reloads. I noticed that the 9th and sometimes even the 8th and 7th shell loaded in the mag tube would not release from the mag tube when racking the gun. I took the the tube back off and set it back up with the stock spring and cap. Still the 4th round loaded into the tube would rarely release from the tube when racking. After unloading those offending rounds with the button and by pressing in on the shell, I would continue to rack the gun till empty and would find that 1 out of every three rounds were not ejecting out of the gun. The bolt would lock back with the next round on the lifter, pressed up against the FTE round, sometimes still in the grip of the ejector, sometimes just floating in the receiver. Other times I would get a double feet from the mag tube. I took the gun apart, cleaned the crap out of it, lubed it sparingly, and reassembled. Same problems. I put the gun back together with the Nordic tube and headed out to my folks to shoot. I dumped 100 rounds through the gun (same ammo as above) without a single problem, as long as I started with loaded chamber. If I tried to rack the 9th (first) round manually, it usually would not load from the tube. When I was done I loaded the gun back up and tried manually cycling these same rounds. Same issue, 9th, 8th, 7th... usually wouldn't load and once every 3 or 4 rounds it will FTE. We're not new to new self loading shotguns, and my dad had a plethora of other ammo brands and models to try. No matter what size, brand, or type we loaded, it all did the same thing. I've cut down a spare spring to the point where it will just barely pop the last round from the tube, and still the first rounds will rarely rack. I've sanded the inside edge of the stock tube to eliminate any catch point between it and where the Nordic tube mates(and again this happens with the stock setup). I've reformed the end of the Nordic spring to provide a nice square face to the follower to maybe eliminate any tilting (and again, this happens with the stock spring). If I contact Mossberg they will probably tell me to mail it in, and with my luck probably not find the problem and mail it back as is. Before I do that I'd like to try to diagnose this myself but could use some help on where to look for the problem. I've got to think something is acting up around the shell stop but it seems move as expected (as much as I can tell not having another one to compare it to). Quote Link to comment Share on other sites More sharing options...
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