Mossberg 930 maintenance

[4fifty8]

• wasn't cycling reliably some ammo brands thought ammo was to blame
• disassembled & did thorough cleaning including gas system
• lots of crud removed from piston rings
• today tried different ammo brands incl. slugs all good
• be sure to keep gas system clean for reliability

 

[theshootist]

Great post, thank you for sharing. Jerry Mickulek has a good video or two on YouTube regarding disassembly and maintenance of the 930.
Thanks again

 

[4fifty8]

Thanks!

Had difficulty removing barrel then realized front 2 scope rail screws were contacting the barrel thru the receiver - oops. Loosened these 2 screws no problem removing barrel.

Barrel removal is simple just remove fastener screwed on at end of magazine tube, remove forend and wiggle barrel loose forward.

 

[burns k31]

Yes, gotta clean those gas guns.
I believe the 930 is a bit underrated nowadays with inertia guns being all the rage.

 

[Grouse Man]

The best way I've found to keep the gas system working is with a synthetic CLP product. Regular oils will bake into hard carbon very quickly. The newer synthetics stay 'wet' and simply wipe off with a rag back down to bare metal. No scraping, steel wool, etc. I spray a generous amount into the cylinder, on the piston and on the magazine tube. It will clean as you shoot it.

Love my 930.

PS. What scope mount are you using?

 

[alpining]

...Had difficulty removing barrel then realized front 2 scope rail screws were contacting the barrel thru the receiver - oops. Loosened these 2 screws no problem removing barrel. ....

You can shorten those screws to solve the problem, no?

 

[4fifty8]

Thanks Grouse Man G96 CLP (clean-lubricate-protect) gun oil sounds like a good solution anything to make crud removal less of a beech. https://g96.com/product/military-approved-synthetic-clp-gun-oil/

Got EGW 930 picatinny rail. https://www.egwguns.com/mossberg-500-590-835-930-935-all-years-shotgun-picatinny-rail

Sure like my 930 however even with ported barrel firing 3 inch 1 oz slugs it belts me way harder than my muzzle-braked .416 Weatherby Magnum.

 

[Bittereinder]

Got EGW 930 picatinny rail. https://www.egwguns.com/mossberg-500-590-835-930-935-all-years-shotgun-picatinny-rail

I'm curious, do you see any advantages of the EGW rail vs. the regular ones sold by Mossberg or Weaver?

 

[4fifty8]

Got a few other fine EGW products really like them brand loyalty I suppose.

 

[Bittereinder]

Thanks.

 

[4fifty8]

Couple dozen rounds thru my 930 yesterday gas system crud build up wasn't too bad removal easier from now on just do thorough cleaning after each use: parati vero parati.

 

[4fifty8]

Today checked out operation with 00 buckshot 2-3/4" shells & IC choke cycles just fine. Except 1 shell bulged what's up with that?? Wouldn't chamber from magazine that will mess you up.

Now aware how 00 buckshot patterns at 50m & 20m.