my scope is mounted, but it's not very straight.

= the problem.

Decent set of rings will permit windage alignment. You should probably invest in a lapping bar too.

I call BS. There is no need to make coarse windage adjustments with the rings. Buy good rings and a good base and your problem will go away. Same for lapping. Rings that need it are crap.

TDC
 
I call BS. There is no need to make coarse windage adjustments with the rings.

In a perfect world perhaps, but this statement simply denies the statements and pictures posted by the OP. If, for instance, the receiver was drilled & tapped on the piss you'd be hard pressed to buy rings and bases "good" enough to correct the problem no ?

If this is to be a hunting rig and you can get to your "permanent" zero by way of internal adjustment then so be it I suppose. Otherwise something else needs adjusting. I can't imagine making big fixed ring adjustments without some consideration to lapping, but I suppose that depends on how careful you want to be.
 
In a perfect world perhaps, but this statement simply denies the statements and pictures posted by the OP. If, for instance, the receiver was drilled & tapped on the piss you'd be hard pressed to buy rings and bases "good" enough to correct the problem no ?

If this is to be a hunting rig and you can get to your "permanent" zero by way of internal adjustment then so be it I suppose. Otherwise something else needs adjusting. I can't imagine making big fixed ring adjustments without some consideration to lapping, but I suppose that depends on how careful you want to be.

If your receiver is poorly drilled and tapped, you bought a lemon and someone would be eating the rifle. That being said, I have a hard time believing that is the issue. Rings and most often the culprit. Cheap rings are no way to mount glass. In addition, if you don't run a picatinny base and appropriate rings, you're missing out on the most effective mounting system ever devised.

TDC
 
gtrussell has a point, Mossbergs were never known for there craftmanship and precision. You may very well have to go to windage adjustable mounts and shim the bases for elevation if need be.

If all this is beyond your comfort range take it to a gunsmith.
 
If I'm installing bases and rings and things look out of whack, I try reorienting the components - turn front base 180 degrees, turn rings around, etc. It's about "de-stacking" the tolerances.

:agree: This is my standard procedure.

Better scopes - better rings - better fit...
 
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