Mount or misaligned barrel?

[natbea09]

I have a Smith and wesson m&p 15-22 with a leupold vx2 3-9 rimfire scope mounted on a burris p.e.p.r mount. My elevation and windage knobs maxed out and I'm still about 3in off both ways. This happened to me originally with a cheap bushnell scope and I thought maybe the problem was the scope. I got this leupold scope and I have the same problem. I unmounted the mount and backed it up on the rail to test it out and same issue. Is it possible this mount is too high for my 22lr? Still wouldn't explain the windage issue though. Maybe the mount is a lemon? I had also sent the gun in for warranty work for malfunctions and they did replace my barrel along with a couple other things. Could it be when they replaced the barrel they didn't align it properly? I could use some serious help figuring this out. I have the same mount for my 223 and had zero issues zeroing it. Any ideas??

 

[GhostMutt]

Wow, 3" out!
Never heard of this issue before. I would take off the mount and scope, put the irons back on and see if the rifle shoots straight, that would tell you if there is anything amiss with the barrel. If the barrel nut is not on tight that would explain a few fliers but not a 3" discrepancy in accuracy.
Once you have worked out if your barrel is at fault or not you can go back to your mount and scope and see which of those is giving you the issue. Burris and Leupold is top quality equipment though so I would be highly surprised if they are causing your issues.

Call Colombo, you need to do some investigating.

 

[natbea09]

Just shot with my irons and they are good to go. So since this is the 2nd scope I try this brings me to believe that the mount is the problem?

 

[sithlord]

At what range are you 3" off (and in what direction)?

It's certainly possible that it's the mount; you could always put it on your .223 and find out.

The windage being off sounds odd.. Might see if anyone at your range has a bore-sight...

 

[GhostMutt]

You are mounted on the upper and not the handguard? Even so you'd have to be gripping like the Hulk if you were to shift the POI 3 inches.

Post some pics of the mount on the rifle so we can get a better look at potential problems with the mount. Which it does seem may be the culprit.

 

[natbea09]

At what range are you 3" off (and in what direction)?

It's certainly possible that it's the mount; you could always put it on your .223 and find out.

The windage being off sounds odd.. Might see if anyone at your range has a bore-sight...

I had to get ridiculously close just to get on paper so about 10 yards. I'm 3in to the left and 3in low and my adjustments are maxed out.

 

[natbea09]

Here are some pictures.. Pretty basic stuff.

 

[GhostMutt]

I don't know if it's just my eyes or the angle of the picture but looking at pic 2 from the left side of the rifle that seems to sit fine, but looking at the right side pic 1 the mount seems to look higher. Maybe just an optical illusion or me looking for a reason but it seems that way to me.

That being said, your mount sit no higher on the rifle than mine does so the height and position of the scope is fine.
I would hazard an guess that your mount may be causing the problem??? could you put a spirit level on it and see if it levels out. To be honest i'm just clutching at straws buddy.

 

[GhostMutt]

Found this on the forum....post number 2 suggest that you could turn the mount around and remount the scope (so the mount is backwards) and see if you are still off low on your elevation but with your windage being right instead of left then the issue is with your mount. Seeing as the OP on this thread never answered it's just another shot in the dark.

It certainly is a frustrating one.
http://smith-wessonforum.com/smith-wesson-m-p-15-22/169669-scope-mounting-problems.html

 

[natbea09]

I don't know if it's just my eyes or the angle of the picture but looking at pic 2 from the left side of the rifle that seems to sit fine, but looking at the right side pic 1 the mount seems to look higher. Maybe just an optical illusion or me looking for a reason but it seems that way to me.

That being said, your mount sit no higher on the rifle than mine does so the height and position of the scope is fine.
I would hazard an guess that your mount may be causing the problem??? could you put a spirit level on it and see if it levels out. To be honest i'm just clutching at straws buddy.

It's not an illusion the ring mounts do not go flush. I either have a big gap on one side or the other side. No matter how hard I try there is always a gap.

 

[Bassyaks]

Is it possible you have a 30mm scope on 1" mounts?

 

[natbea09]

Is it possible you have a 30mm scope on 1" mounts?

No. My scope is a leupold vx2 3-9 1in.

 

[LAA]

It's not an illusion the ring mounts do not go flush. I either have a big gap on one side or the other side. No matter how hard I try there is always a gap.

As far as those gaps go, just loosen one side & tighten the other, until they're even on both sides. I use these same mounts. There will always be a small gap, but at even on both sides. Not saying that will eliminate the problem though.

 

[WR Moore]

There seem to be windage issues on many scope mounts allegedly intended for AR picatinny rails*. In the first photo, the objective appears to be visibly higher than the rear. If that's the actual case, there's no way you'll get that to sight in.

I installed a similar mount on a friends rifle and the windage is way off on a boresight attempt. Didn't mess with the adjustment screws, but I doubt it will sight in.

A different mounting system on another rifle needed to be flipped to get the windage correct.

You might try a set of extra high rings to see if they'll line up better. Burris signature Zee rings use offset inserts to allow you to correct for windage/elevation errors. A ring kit (around $14) gives you a maximum of 30 minutes of correction.

*Actually, the problem may be that the mount was for the Weaver bases and they didn't cut them to allow for the extra material on the top of a Picatinny rail.

 

[LAA]

There seem to be windage issues on many scope mounts allegedly intended for AR picatinny rails. In the first photo, the objective appears to be visibly higher than the rear. If that's the actual case, there's no way you'll get that to sight in.

I think it's an illusion. In the first pic, it looks high. In the second pic, with the rifle turned around, the front looks low, or at least level.

 

[GhostMutt]

LOL what colour was the dress?

I'd get yourself a new mount..even a cheap set off the bay just to test the scope is not the issue. If your irons are on target it's not the barrel, if your scope works with a cheap set of rings, it's not the scope, that leaves the mount...Don't Burris have lifetime warranty? They will replace or refund or take it back where you bought it and swap it for something else.

 

[natbea09]

It should be lifetime warranty. I'll call burris tomorrow to see if I can get an exchange or something.

 

[LAA]

It should be lifetime warranty. I'll call burris tomorrow to see if I can get an exchange or something.

Lots of methods to find out if the mount is in alignment. I'd find out first, before asking for exchanges, refunds, etc. But that's me. From what I've seen in the pics, what looks obvious in the first pic, doesn't look that way in the second photo.

 

[natbea09]

Lots of methods to find out if the mount is in alignment. I'd find out first, before asking for exchanges, refunds, etc. But that's me. From what I've seen in the pics, what looks obvious in the first pic, doesn't look that way in the second photo.

My iron sights are good. I've tried two different scopes. Doesn't that suggest the mount? There are no alignment adjustments for the mount. I'll try to find a YouTube video to see if I can find out how to tell if my mount is aligned.

 

[MichiganScott]

The mount looks off, both vertically and horizontally. Either it's been installed incorrectly or it's defective. Try reinstalling it in different slots before calling Burris.