Mossberg 930: Was going to shorten barrel, decided to replace it... Then sold it!

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Originally Posted by Cretin

Winchester Universal is garbage, but it's not the issue. Mossberg's QC is. The design is great, but there are lots of tooling marks and grease that needs to be removed.
Follow this guide
http://www.migunowners.org/forum/arc.../t-287224.html

This took me about 3 hours and I was still getting ftfs. Of all things, the extractor was too tight, and it was causing shells to chamber at about a 20 degree angle and become stuck when entering the chamber. I removed and degreased all parts of the extractor, weakened the spring with sandpaper, and polished the detent. My gun is awesome now, and runs even the cheapest lowbrass birdshot I can find.

These are great alternatives to Benelli, but they need some work to run.

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Thanks for posting this. I plan on getting the 930 apart again this weekend to look for any of the stuff in the link. I ran a different ammo this past weekend but suffered the same. All FTE malfunctions. It seems like the shell gets to a certain point and just doesn't have enough oomph to get it past a tight spot in the chamber. I think I am going to try to polish the chamber to see if that helps also. At this point, it's becoming a war of attrition. I will make this shotgun run smoothly!!

ETA, found this also which I plan on doing:

https://www.youtube.com/watch?v=f-9_K3VQhZM

Was searching for something in the shotgun forum and came across my old thread so figured I would update it. Never did get the 18.5" barrel to run properly, including after polishing the chamber. Shells over 1350 fps seemed to run a bit better with maybe one FTE in a box. Decided life is too short mess with an unreliable gun so sold it. Luckily I got a killer deal on the 18.5 barrel so almost got all my money back on that plus the sale of the original 930 was flipped into a Mossberg 590A1 20". I had mixed feelings about giving more money to the same company but reconciled it with the fact the 590A1 has a solid track record.