just made an upgrade from windage adjustable Leupold rings & bases to Leupold dual-dovetail system on my Weatherby 30-06. It uses a Leupold VX-II 3x9 scope. While attempting to bore-sight after the move to dual dovetails, I now do not have enough windage to get this rifle bore sighted. All was well with the windage adjustable system.

I have installed dual dovetails on the balance of my rifles and have never had this problem. any ideas?? Im all ears..I do have a new Talley LTWT 2pc set that im condsideing trying.

quote:

Originally posted by Ken Bruner:
just made an upgrade from windage adjustable Leupold rings & bases to Leupold dual-dovetail system on my Weatherby 30-06. It uses a Leupold VX-II 3x9 scope. While attempting to bore-sight after the move to dual dovetails, I now do not have enough windage to get this rifle bore sighted. All was well with the windage adjustable system.

I have installed dual dovetails on the balance of my rifles and have never had this problem. any ideas?? Im all ears..I do have a new Talley LTWT 2pc set that im condsideing trying.

That isn't particularly unusual with today's mass produced guns. Manufacturers are in too big of a hurry to get them out the door and into the hands of the general, uneducated public.

Obviously your base holes and bore are mis-aligned. The problem could be out of whack screw holes, or, the barrel and receiver are out of alignment. Placing the blame directly on the gun might seem a bit presumptuous, but I rarely see the problem being with the base itself. That would be too easy!

If the problem is as I suspect, with the gun, then the solution may be as simple as being forced to use windage adjustable bases on this gun, or, it could be as entailed as requiring machining to bring the receiver and barrel back into alignment. If the base holes are the problem then it's possible that they can be brought back into a little better alignment without major work.

Burris makes their Signature line of rings with inserts for that very reason. You might check and see if they are available in double dovetail.

quote:

Originally posted by hoghunting:
Burris makes their Signature line of rings with inserts for that very reason. You might check and see if they are available in double dovetail.

I may be wrong, but I believe the Burris Signature rings only correct for misaligned rings, not barrel and rings.

I think weatherbys are a gunsmiths best friend.

quote:

Originally posted by cummins cowboy:
I think weatherbys are a gunsmiths best friend.

Yep, them and Ruglers!

quote:

Originally posted by Westpac:


I may be wrong, but I believe the Burris Signature rings only correct for misaligned rings, not barrel and rings.

Been sniffing a little too much Breakfree today Malm? THe SIgnatures correct for any alignment problems. Think about it, sayeth this grasshopper to the wiser one.


I would swap the rings around and see how the scope lined up. The ring that is on the frotn right now, move it to the rear, and veesee veesee.

If that doesn't work, then get a set of the Burris Signature Dual Dovetail rings along with a set of their offset inserts, and put those on your current bases. The directions will show you which offset inserts need to go where.

quote:

Originally posted by Marc_Stokeld:

quote:

Originally posted by Westpac:


I may be wrong, but I believe the Burris Signature rings only correct for misaligned rings, not barrel and rings.

Been sniffing a little too much Breakfree today Malm?

That and a little lead dust lately I'm afraid...


Actually, I prefaced that comment with "I may be wrong"

I have never used the stuff myself, Burris Signature rings that is, prefering instead to make things perfectly square and straight so as to avoid gimmicks and trickery, however, I just looked closely at a set of Signature rings that are on a customers gun and they make sense. Go figure.

I just got off the phone with a technician at Burris, of all places, and he tells me that you can rotate the eccentric inserts in any direction around the clock to obtain the desired amount of movement that you need. This would be a cheap fix for those scopes that require no more than 20 inches of movement at 100 yards to be on, sooooo grasshopper, I stand corrected.

quote:

Originally posted by Westpac:
...I just got off the phone with a technician at Burris, of all places, and he tells me that you can rotate the eccentric inserts in any direction around the clock to obtain the desired amount of movement that you need. This would be a cheap fix for those scopes that require no more than 20 inches of movement at 100 yards to be on, ..

Cheap??? I'd change Cheap to "Excellent". The Burris Signature mounting system is at least one generation ahead of all other Scope Ring designs.

The big problem is once I used them, I wanted them on everything. They get a tenacious grip on the scope tube, DO NOT allow a Large Heavy Scope to slip on a light-weight, high-recoil rifle, and will not mar the tube. That is just with the "Standard" Inserts.

Then you get to the Eccentric Inserts, - Oooh-Raaah! You can correct any Minor misalignment issues and most Major issues. If it can't be corrected with these, you should be able to see the Barrel was run over by a tank or the Receiver was probably drilled in New Haven. The Eccentrics will fix most of those issues.

And for those of us that like to shoot at a bit of distance, you can have the advantage of a $100-$200 Tapered Base for $10.

I can see($$$.$$) "why" some Gun Smiths would be reluctant to try them.

so lets say you wanna gain some elevation for long range shooting and your scopes adjustment doesn't give you enough, is it possible to adjust the concentric inserts to gain adjustment. if so how much adjustment do you think they can gain.

quote:

Originally posted by cummins cowboy:
so lets say you wanna gain some elevation for long range shooting and your scopes adjustment doesn't give you enough, is it possible to adjust the concentric inserts to gain adjustment. if so how much adjustment do you think they can gain.

With the right insert about 20 inches.

Yep, I think the max insert is +10 and -10
with one in the front (-10) and +10 to prop the back up, your probably right to 1000 yards.

Both Westpac and JAL have given good answers. But, it also depends on how far apart the Rings are. The closer the Rings are, the more the Eccentric Inserts will change the angle.

A multi-sloted Weaver Style Base and Burris Signature Z-Rings with two packs of the Eccentric Inserts gives all kinds of adjustment possibilities.

The 1" Pos-Align Offset Insert Kit(Eccentric Inserts) contains:
One 0.005" offset insert marked -5 and +5 which Burris says corrects approximately 5" at 100yds.
One 0.010" offset insert marked -10 and +10 which Burris says corrects approximately 10" at 100yds.
One 0.020" offset insert marked -20 and +20 which Burris says corrects approximately 20" at 100yds.

Of course it just depends on the Ring spacing and which Eccentric Inserts you use. I have 4-5 sets of the Eccentric Inserts and I can match two sets of "20s" on a couple of rifles and match "10s" or any mix I desire for Verticle Adjustment. The 30mm Rings don't have a separate set of Eccentric Inserts, and come with 0s, 5s and 10s in with the Rings.

You can also rotate the Inserts within the Rings as was mentioned to compensate for most any Lateral misalignment.
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Oh yes, forgot to mention they totally eliminate the Ring Lapping needed for ALL OTHER Ring Designs. Lapping is necessary to correct for minor misalignments which create Tube Stress. That alone makes them worth getting, even if an Eccentric Insert is not needed.

The only negative thing I've heard about them is they weigh 1-1.5oz more than some of the ultra-light Rings. But, you can carry a 200gr Bullet in your pocket until it is easy to tote. Then work your way up to carrying three of them. Finally remove the three 200gr Bullets from your pocket and Sha-Zam you can manage the Burris Signatures on a rifle.

An amazing design.

I would check the range of adjustment of the scope.

I would loosen the screws to the mounts and see how much play there is.

I would find out where the error is.

But in the end, I often wind up putting the mount on the mill and move the screw holes and countersinks a little.

Then I would bed the bottom of the mount to the receiver while bore sighted.

Even if it is the fault of the holes are off center in the receiver, this is an easier fix.

When I buy guns at a discount at the gunshow, scope mount trouble is often why the rifle is being sold.

As much as I have liked Leupold's scopes, that particular model is not blessed with an abundance of internal adjustment. I have seen this problem many times. Swap the scope for another model and the problem will probably disapear.

Conetrol mounts are windage adjustable, very attractive, and strong. The Burris system works well, but can take a bit of trial and error. Besides, it's not very graceful. (I've had two M700's with this problem.) You can also have the holes re-drilled to No. 8, and realigned a bit.