Disappointed by Mossberg 930 SPX


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JJNA
October 1, 2013, 10:40 PM
Inspired by a couple of cool, fun YouTube videos I saw on the 930 SPX, I took an interest and looked for it at a recent gun show. It was a big letdown.

First of all, I found three and all three had loose forend. One of them actually rattled quite badly. What gives?

Second, the LPA sights were really tall. I couldn't even get a good chin weld, let alone a cheek weld. And I actually have a large head. How are people shooting this shotgun? The comb was better on the standard stock than on the Choate "assault" stock, but even on the former the sights seem to be too tall for any semblance of a cheek weld.

I understand that there is a stock spacer system with the regular stock that allows the comb to be raised by about half an inch or so (a little under, i think). Does that make a difference? How tall is that sight sitting on top of the receiver? Half an inch? An inch?

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browningguy
October 1, 2013, 11:17 PM
I guess they could rattle if they weren't assembled and tightened down when taken out of the box, otherwise never heard of a problem with the forends. As for sights I reckon they fit some folks, and perhaps not others, but I haven't seen any problem with people shooting them in 3 gun events.

Destructo6
October 2, 2013, 11:08 AM
Forearm tightness could be just a matter of snugging down the magazine tube cap.

I have a 930 JM pro, so I can't really comment on the sights of the SPX model. The JM Pro does have the stock spacer setup, which allows you to change the angle of the stock.

The JM Pro has a fiber optic bead sight only. The POA/POI was pretty far off, so I installed some Williams Fire Sights and all has been well since.

I had/have other issues with my 930.

Arizona_Mike
October 2, 2013, 11:49 AM
My main issue with the 930 is the fact that slide release and shell ejection use the same protruding button that can be easily bumped and jam the loaded and chambered gun. At the very least they put a shroud around it!

My secondary issue is that mine does not cycle low brass. A few voicemails to Mossberg went unreturned.

Mike

SuedePflow
October 2, 2013, 12:21 PM
I handled one at a gun show this past spring and found it to be very heavy. At least heavier than I anticipated and heavier than competing models.

My buddy just bought one a few days ago and I'm hoping to try it out this coming weekend. I'm interested to see how it shoots compared to my Benelli M1.

JJNA
October 2, 2013, 01:21 PM
I actually thought it was quite light and handy-feeling. I just couldn't get over how tall those LPA sights were. Even with my chin just barely touching the stock, I was not getting a good sight picture.

Destructo6, what other problems did you have? Does the JM Pro model have chromed chamber and barrel? The regular 930s and 930 SPXs do not, correct?

JJNA
October 2, 2013, 01:22 PM
I am now thinking of getting an FN SLP Tactical. For some reason, though, I cannot find one easily -- everyone seems to carry the Mk I version with 22" barrel, but not the 18" version. I guess everyone's using them for 3-gun competitions.

allaroundhunter
October 2, 2013, 02:49 PM
Similarly to destructo, my 930 JM has had some serious problems. Mossberg seems to have much more QC problems than most other manufacturers.

SuedePflow
October 2, 2013, 02:51 PM
There's a couple 18" SLP's on GunBroker. But you're right - the 22" models are more plentiful.

Personally, I'd prefer the 22" barrel.

Fred Fuller
October 2, 2013, 03:10 PM
My main issue with the 930 is the fact that slide release and shell ejection use the same protruding button that can be easilly bumped and jam the loaded and chambered gun.

Definitely agree - something ALWAYS seems to bump that button, and off we go to fumble city trying to clear it.

JJNA
October 3, 2013, 12:57 AM
Similarly to destructo, my 930 JM has had some serious problems. Mossberg seems to have much more QC problems than most other manufacturers.
What were these problems?

JJNA
October 3, 2013, 12:58 AM
There's a couple 18" SLP's on GunBroker. But you're right - the 22" models are more plentiful.

Personally, I'd prefer the 22" barrel.
Isn't the 22" version heavier and less handy than the 18" version? For home defense and such, isn't 18" pretty much the standard?

allaroundhunter
October 3, 2013, 01:33 AM
What were these problems?

Came from the factory with the magazine tube dented to the point that the follower and shells couldn't pass. After that the crappy follower still caused cycling problems. After replacing the follower a pin in the bolt would come loose during firing and cause problems. Not quite sure why they don't stake that pin at the factory, I guess that would make too much sense.

Destructo6
October 3, 2013, 02:16 PM
Destructo6, what other problems did you have? Does the JM Pro model have chromed chamber and barrel? The regular 930s and 930 SPXs do not, correct?
No chrome lining in barrel or bore.

After 2 trips back to Mossberg/Maverick Arms, my 930 continues to have problems with high velocity (1oz at 1600fp) slugs. What happens is that it will fire, extract, and eject the slugshell, but will not release the next shell from the magazine tube, so when the bolt closes, it does so on an empty chamber.

One of my buddies' FN SLP does this, too, but another pal with the same model does not have any problems. I have a couple of buddies that shoot the same model 930 that I use (JM Pro) that have never had a problem.

It seems to cycle reduced recoil slugs well, although I've only fired 10 or so of those. Finding these in stock is often difficult.

I can't say I've ever activated the shell/bolt release accidentally, though.

JJNA
October 4, 2013, 12:40 AM
Came from the factory with the magazine tube dented to the point that the follower and shells couldn't pass. After that the crappy follower still caused cycling problems. After replacing the follower a pin in the bolt would come loose during firing and cause problems. Not quite sure why they don't stake that pin at the factory, I guess that would make too much sense.
I have to say, that's one thing I like about FN SLP -- its magazine tube has an outer sleeve that protects it from dings that can render other shotguns inoperative. SLP is looking better and better.

JJNA
October 4, 2013, 12:42 AM
No chrome lining in barrel or bore.

After 2 trips back to Mossberg/Maverick Arms, my 930 continues to have problems with high velocity (1oz at 1600fp) slugs. What happens is that it will fire, extract, and eject the slugshell, but will not release the next shell from the magazine tube, so when the bolt closes, it does so on an empty chamber.

One of my buddies' FN SLP does this, too, but another pal with the same model does not have any problems. I have a couple of buddies that shoot the same model 930 that I use (JM Pro) that have never had a problem.

It seems to cycle reduced recoil slugs well, although I've only fired 10 or so of those. Finding these in stock is often difficult.

I can't say I've ever activated the shell/bolt release accidentally, though.
Really? I thought the JM Pro models of 930 had chromed chamber/bore? Are you sure? I know the FN SLP does... Hmmm...

BTW, when you are looking through the tall LPA sights, where is your cheek in relation to the stock?

Destructo6
October 4, 2013, 10:44 AM
Mossberg doesn't list chrome lining on the JM Pro and I don't recall seeing anything to indicate chrome lining.

The JM pro has just a bead sight as stock, so I can't comment on the SPX sights. I installed the Williams Fire Sights, which only stick up a little bit.

SuedePflow
October 7, 2013, 10:31 AM
Got to shoot my buddy's yesterday. I liked it quite a bit. The sights are definitely standing really tall. I couldn't bury my cheek into the stock, but I did comfortably shoot it anyway. A fiber-optic front is nice to have and I could easily get used to the height. One thing I noticed is that the spring on the lift and inside the mag tube are of a lesser rate than the ones on my Benelli which makes it much easier and quicker to load. That was a pleasant surprise.

JJNA
October 7, 2013, 11:45 PM
Got to shoot my buddy's yesterday. I liked it quite a bit. The sights are definitely standing really tall. I couldn't bury my cheek into the stock, but I did comfortably shoot it anyway. A fiber-optic front is nice to have and I could easily get used to the height. One thing I noticed is that the spring on the lift and inside the mag tube are of a lesser rate than the ones on my Benelli which makes it much easier and quicker to load. That was a pleasant surprise.
Did this 930 SPX have a conventional stock or the "assault" stock?

SuedePflow
October 8, 2013, 09:39 AM
Conventional. He didn't like the pistol grip with where the safety is located.

JJNA
October 10, 2013, 01:01 AM
Conventional. He didn't like the pistol grip with where the safety is located.
Conventional stocks have a shimming system to raise/lower the stock, so maybe your friend's was raised all the way up.

SuedePflow
October 10, 2013, 09:23 AM
Interesting. Is there a picture that shows where and how the shims fit? I'm having a hard time picturing how shims change operating angle, and Google seems to be failing me.

Destructo6
October 10, 2013, 10:32 AM
Page 20 of the 930 Manual shows the "stock spacer" adjustment:

http://www.mossberg.com/manuals/930%20935%20Rev%20D.pdf

JJNA
October 10, 2013, 04:38 PM
Is there anyone here who has a 930 SPX and, if so, could that person be able measure how tall the LPA sight is from the barrel and tell us? Thanks!

Stevie-Ray
October 11, 2013, 01:40 PM
I understand that there is a stock spacer system with the regular stock that allows the comb to be raised by about half an inch or so (a little under, i think). Does that make a difference? When I bought mine, I tried it stock, then installed the largest spacer for rise. It is now perfect. Great cheek weld, the gun is quite comfortable, it has digested everything with equal aplomb, and I love it. Mine does NOT have a pistol grip, as that is one thing I DIDN'T want. Mossberg's safety is great on a standard grip-not so much on a pistol grip.

JJNA
October 13, 2013, 07:31 AM
How high does your front sight/ghost ring sight sit on top of the barrel/receiver? Would you mind measuring it? Thank you!

C0untZer0
October 13, 2013, 08:04 AM
http://www.mossbergowners.com/viewforum.php?f=14

JJNA
October 14, 2013, 05:30 AM
????

gunsmoke178
October 14, 2013, 06:24 AM
My main issue with the 930 is the fact that slide release and shell ejection use the same protruding button that can be easily bumped and jam the loaded and chambered gun. At the very least they put a shroud around it!

My secondary issue is that mine does not cycle low brass. A few voicemails to Mossberg went unreturned.

Mike
The 930 will cycle low brass if you shoot it gangster style ,with the ejection port facing up .I ran 100 low brass through mine (walley world value box) and found that this is the only position that they will cycle .I believe the manual tells us that it will not cycle low brass .

SuedePflow
October 14, 2013, 09:48 AM
So, my buddy and I shot in the shotgun match at the Knob Creek machinegun shoot this past weekend. He used his relativily new 930 and had several problems. He had ran about 100 rounds through it already and had no issues. So we get down to kentucky and now he's getting double feeds. It happened 2 or 3 times during the match. And most interestingly, his mag tube sometimes only allows 5 rounds instead of 7. It comes and goes. And all day during the match, he wasn't able to get more than 5 in there. Anybody else have this issue or know what could cause it?

allaroundhunter
October 14, 2013, 02:58 PM
So, my buddy and I shot in the shotgun match at the Knob Creek machinegun shoot this past weekend. He used his relativily new 930 and had several problems. He had ran about 100 rounds through it already and had no issues. So we get down to kentucky and now he's getting double feeds. It happened 2 or 3 times during the match. And most interestingly, his mag tube sometimes only allows 5 rounds instead of 7. It comes and goes. And all day during the match, he wasn't able to get more than 5 in there. Anybody else have this issue or know what could cause it?

Check for a dent in the magazine tube or the spring being deformed.

Arizona_Mike
October 14, 2013, 06:28 PM
The 930 will cycle low brass if you shoot it gangster style ,with the ejection port facing up .I ran 100 low brass through mine (walley world value box) and found that this is the only position that they will cycle .I believe the manual tells us that it will not cycle low brass .
Yea but if I go gangsta I'll have to change my handle to MC 'Zona. Word.

MC 'Zona in the Hizzouse

PS. I was actually looking forward to being a minority by now but the poor economy/housing crisis delayed that by a bit. I'm not sure it will be worth it. I'll have all kinds of new things to worry about. Am I maintaining an authentic paradigm? Just how difficult is procurement? Is El Hombre keeping me down?

chuwee81
October 19, 2013, 10:34 AM
to answer suedeplfow - fairly new is the suspect here. Did your friend do a complete tear down, stripped factory packing grease and relube? My mag tube was stiff when i first tried it. It will feed 5 as well. But by unloading and re-loading several times, it loosened up and had no problem with 7 rds since.

I have tried from express long range, buckshots, slugs and EVEN wally world 100 rd pack and it had no problem ( no need gangsta style). So much so that i bought another 3 of those 100 rd pack. Me and my buddy had big ear to ear grin shooting various loads through my SPX. Loved it and the controls. Never bumped the bolt release by accident - it even simplifies operation, 1 button to do it all haha. Anyway enjoy the pics:

http://img.photobucket.com/albums/v352/bluesboyk3/20131011_150121_zpsf03bd642.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_150121_zpsf03bd642.jpg.html)
http://img.photobucket.com/albums/v352/bluesboyk3/20131011_150131_zps1753abc8.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_150131_zps1753abc8.jpg.html)
forgot which target is mine but my friend is the one in orange getup - never handled a shotgun before. he did shot my AK last time we went out.
Both targets are from 15 yds away.

Check out the muzzle blast from the express long range
http://img.photobucket.com/albums/v352/bluesboyk3/20131011_142204_831_zpse5f5a4e5.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_142204_831_zpse5f5a4e5.jpg.html)
http://img.photobucket.com/albums/v352/bluesboyk3/20131011_144701_zpsfbd982e4.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_144701_zpsfbd982e4.jpg.html)
http://img.photobucket.com/albums/v352/bluesboyk3/20131011_141938_37381_zps287a617a.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_141938_37381_zps287a617a.jpg.html)

NOW it did have malfs BUT due to bad ammo. Beware of the "spartan" brand buckshot. 25 rds for 11 or 12 bux at academy. I would say 30% of the shot resulted in these:
http://img.photobucket.com/albums/v352/bluesboyk3/20131011_144646_zps697b76b3.jpg (http://smg.photobucket.com/user/bluesboyk3/media/20131011_144646_zps697b76b3.jpg.html)
see the bulge on the brass? Well, it swelled up in the chamber and the SPX could not extract it. No issues with other ammo.

And those of you who are still thinking of the SLP Vs this, TTAG did a 500 rd test with both guns
http://www.thetruthaboutguns.com/2011/02/foghorn/stress-testing-semi-automatic-competition-shotguns/

Anyway I loved mine. I bought it at a gun show, had them shipped me a 6rd side saddle and a barrel clamp. It's under my bed as my primary HD weapon. YMMV


EDIT: I would like to add, that earlier models have had quality control issues. Funny thing is that When i bought my SPX at the gun show, i didn't have enough time to fill in 4473 and did the background check (after church and my 2 yr old in tow - She pooped and want to eat at the same time. Placed food order, then change diaper, then pick up food. Wife was working at that time). So the vendor told me that they will keep my info, ran the NICS when they get back to their store and hand me the SPX 3 weeks later when they would be returning to another gun show (same venue, just 3 weeks later). I put a deposit down and we met 3 weeks later. During that time i did my research and hoped that mine would be the later model and thank God it is.

Stevie-Ray
October 20, 2013, 09:36 PM
How high does your front sight/ghost ring sight sit on top of the barrel/receiver? Would you mind measuring it? Thank you! On mine: Center of ghost ring is 7/8" above receiver. Fiber-optic is 1 1/8" above barrel.

While making measurements, I hefted the gun again to shoulder. Perfect cheek-weld, and the sights cleared instantly. Love it.

JJNA
October 22, 2013, 10:25 AM
On mine: Center of ghost ring is 7/8" above receiver. Fiber-optic is 1 1/8" above barrel.

While making measurements, I hefted the gun again to shoulder. Perfect cheek-weld, and the sights cleared instantly. Love it.
Thank you. That is curious. Typically I get a good cheek-weld with a bead on a shotgun. If the fiber optic sight is 1 1/8" above barrel, that means it is easily an inch higher than where the bead would have been. How could people get a good cheek-weld with that much higher of a sight?

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