Mossberg 590A1 ghost ring issues

P

PitBull

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Got a question for you experienced Mossberg 590 ghost ring users.

I have a 590A1 that I bought used a few weeks ago. Today I shot some slugs though it off of the bench just to get the sights adjusted for them.
Even at 25 yards I had to have the elevation adjusted almost all the way to the highest setting to get it in the 10 ring at that distance. The slugs were Brenneke KO.
I have rifles with aperture sights so I know what the sight picture is supposed to be. I had the top of the front sight right on the 10 ring. I could get some other slugs and try them but I can't see them making that much of a difference.

Is this problem familiar to anyone?
 
I bought a half-dozen 590-A1's for a little Sheriff's Dept., 20 years ago, and spent an afternoon zeroing them at 50 yards with 2 3/4" Super X slugs. As I recall, nearly all of them required at least half of the elevation adjustment to get them 'on'. All of them did zero, however.

Sounds like Mossberg is still using plenty of front sight... I'd take a file to it, if it bothered me, and touch up with cold blue and model paint.
 
Thanks for the reply.
If it used half the elevation to get to 50 yds I wouldnt mind but it's using nearly twice that to get half the distance.
At this point if I were to go with front sight filing I'd be down to a nub by the time I got it down enough.:(
 
>I have rifles with aperture sights so I know what the sight picture is supposed to be.​
Perhaps you and Mossberg differ in this. I was taught to use a six-o'clock (punkin on a fence post) sight picture with aperture sights and bullseye-type targets. Other's advocate a centered sight picture. Obviously, mixing methods can result in vertical differences equal to the radius of the black. Frequently we see similar questions on sight alignment, and many opinions are offered without questioning the OP's sight picture. The Mossberg owner's manual addresses adjusting the ghost ring sight; but, makes no mention of the "proper" sight picture nor what slug weight/velocity is recommended.
 
Call Mossberg and ask them. There could be a problem with your weapon. Or it could be designed to use a particular load.
 
Mossberg said to send it back to them and that it's still under warranty so I did. It arrived there today. When I comes back (no telling how long) I'll shoot it and come back here with the results.
 
Mossbergs front sights are not the most QCed on the market. The 930 SPX had a run of shotguns with a canted (to the left if I remember) front sight. Since I read this online I went to Dicks and my LGS, and yup, canted to the left buy quite a bit. I hope Mossberg makes this right.
 
I walked into a 3 gun shoot today without zeroing mine and was off about 6" to the left at 50 yards. I can't seem to find the "adjustment per click" information anywhere. I'd like to get a general idea of windage adjustment before sighting it in. Anyone have that information?
 
I can't seem to find the "adjustment per click" information anywhere. I'd like to get a general idea of windage adjustment before sighting it in. Anyone have that information? ​
Perhaps there's a Mossberg ghost-ring owner out there with a laser bore sight. It could be used to estimate the sight's clicks-per-inch at a given distance.
 
Got it back today!

After a 1 1/2 months it finally came back. I don't know what they did to it but they sent a copy of a bullseye target marked "50 yards" with a 3 shot slug group in the 10 ring that measures about 2 inches center to center.
If it really does that well for me I'll be ecstatic!
I won't have time to go shooting this weekend but I will in the next few weeks. There was nothing stating what had been done to correct the issue. The only thing changed visibly is that there was a small scratch on the barrel that's no longer there. That means they either touched up the scratch just because or it was a bad barrel and they replaced it with a new one.
They also sent an owners manual and a cable lock for it.
I'll come back with a range report when I shoot it.
 
Sarge, you no doubt purchased six Models 500's 20 years ago...but you certainly didnt purchase Model 590A1's- they arent THAT old.
 
p99guy Sarge, you no doubt purchased six Models 500's 20 years ago...but you certainly didnt purchase Model 590A1's- they arent THAT old.
Click to expand...

They were 590-A1's for certain- long mag tube, heavy barrel, ghost-ring sights and metal triggerguard and safety button. We got them from a LE supplier and I specifically recall ordering 590s. I know what they were because I zeroed every one of them. I may be off by a year but this would have been no later than late 1992. The office-holder who approved them was gone that November.

Don't know where you are getting your info but by googling around a little, I can find references to the 590-A1 from late 80's, purportedly after the Navy requested heavier barrels because standard barrels were getting dented on-ship.
 
I must have gotten real lucky with the Maverick 88 I just slapped together, then.

A slug at 25 yards, load of 00 buck at 25, and a second slug (red highlight) at 50 yards-

588_slug_50.jpg


(Plus some birdshot thrown in, just because ;)
 
I have a Maverick 88, too. I've had it for quite a while and I've only tried slugs in it once and they were high and to the right at 40 yds.
It does a decent enough job with 00 buck.
 
Sarge, you no doubt purchased six Models 500's 20 years ago...but you certainly didnt purchase Model 590A1's- they arent THAT old.
Click to expand...


yes, they actually are. the civilian 590a1 models aren't but the gun has been produced on contract mil/le runs since the mid or late 80's, phasing out the 500mils and 500atp
 
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