I am mounting a scope on a markX mauser action with 2 piece mounts. When I put the scope in the rings my point of aim is way too high in relation to point of impact and my scope runs out of adjustment before I can get the cross hairs on the target. So I install shimms from brownells under the rear mount and get the sope to zero where I want. Now my scope rings are not aligned. The rear rings is higher than the front. I don't want to tighten the scope in the misaligned rings. now what do I do?

Probably the cheapest and quickest answer is to try a set of Burris rings with the inserts that allow for a slight adjustment of the scope in the rings.

Are you using the Redfield type turn in, Weaver Slot, Warne Premier or other type rings and bases? Check to be sure that you have the correct bases for your rifle. Your action front top where the front base attaches should be parallel with the centerline of the barrel bore. If you are sure you have the correct rings and bases you may have to lap in your rings. Use a 1†steel rod and abrasive (lapping compound) and make the rings have full contact with the rod. Lapping rods are available commercially. I have had trouble with the rings not clamping to hold the scope after lapping so you may have to make some adjustment on the mating surfaces of the rings.

Something sounds really screwy here. If the scope is now mounted such that it is lined up with the sight through the bore the rings shouldn't be misalligned. I am not familiar with mounting a scope on a MarkX rifle and can't figure out what is happening here, and maybe you should let a gun guru or a smith take a look at it and give you some hands on advise.

Perhaps I was not as discriptive as I should have been. My appoligies. I hope to eliminate any confusion.

The action is a charles daly mark 10. The mounts I got are Leupold 2 piece for the mark 10. Both mounts came in the same package. The rings are leupold standard medium height 1". When I installed the scope it lined up correctly in the rings. However when I try to bore sight the rifle using a street lamp about 300 yards away. I look through the scope, the cross hairs (point of aim) and compare it to where the bore points (point of impact, which will actually be lower due to bullet drop) the point of aim in the scope is very high compared to the point of impact. When I try to adjust the point of aim to meet the point of impact I run out of adjustment in the scope before the two points converge. Thus my point of impact will be several inches low at 50 yards with no further adjustment possible.

So, I have some shims for mounting scope bases from Brownells and used them to raise the rear base of the scope mounts until I can get the point of aim (with the scope elevation adjustment approximatly centered) slightly below the point of impact.

Now my rear rings are higher than my front rings and I am wary of tightening my $400 scope in the now misaligned rings. I like the idea of lapping. However, I am listening for any other viable solutions.

Thank you for your time and understanding.

quote:

Originally posted by 45otto:
Perhaps I was not as discriptive as I should have been. My appoligies. I hope to eliminate any confusion.

The action is a charles daly mark 10. The mounts I got are Leupold 2 piece for the mark 10. Both mounts came in the same package. The rings are leupold standard medium height 1". When I installed the scope it lined up correctly in the rings. However when I try to bore sight the rifle using a street lamp about 300 yards away. I look through the scope, the cross hairs (point of aim) and compare it to where the bore points (point of impact, which will actually be lower due to bullet drop) the point of aim in the scope is very high compared to the point of impact. When I try to adjust the point of aim to meet the point of impact I run out of adjustment in the scope before the two points converge. Thus my point of impact will be several inches low at 50 yards with no further adjustment possible.

So, I have some shims for mounting scope bases from Brownells and used them to raise the rear base of the scope mounts until I can get the point of aim (with the scope elevation adjustment approximatly centered) slightly below the point of impact.

Now my rear rings are higher than my front rings and I am wary of tightening my $400 scope in the now misaligned rings. I like the idea of lapping. However, I am listening for any other viable solutions.

Thank you for your time and understanding.

The way I understand your decription of the problem, you need to get your scopes' reticle to point down more in relation to the center of your bore. How high does it point to begin with? My proposed solution might work OK if the divergence is not tremendous!

Short of using Burris rings with the inserts in them, first remove the shims from under the rear base, and mount it as it was to begin with. Readjust your reticle back to the center position on the vertical adjustment knob. Then place a shim (or more, what ever it takes to get the thing boresighted with the vertical adjustment centered) in the bottom of the REAR RING, then set the top half of the ring on top of the scope tube and tighten it down until the screws are tight, but without a "gorilla" tightening job on the rear ring screws. This is with the scope held in place by the front ring, which I would tighten to the point that the recoil is being taken primarily by the front ring.

I have applied this "fix", (and its' opposite, shims under the tube at the front ring to make the scope point up more) to a lot of scope/mount setups over the years, with no adverse effects on the scope at all. I make my shims from an "unpeeled" aluminum beer can, and cut them out with a plain pair of scissors. On rifles of heavy recoil, I use rubber cement inside the rings and blue Loctite on the screws. This is after I clean all oil off the inside surface of rings and screw surfaces/holes with alcohol. I use pipe cleaners to clean oil out of screw holes.

I can't help but wonder if you have gotten the wrong mounts. Wouldn't the first time that they got the wrong ones in the package.

If this is possible, try moving the Base you have on the Front to the Rear and the Rear to the Front. I do not know about your rifle, but some rifles require Bases of two different heights on the receiver for the Scope to align properly.

The guys that suggested getting the Burris Signature Rings have given you some excellent input. I would also recommend getting a box of the Eccentric Inserts and you can adjust the scope any direction you want.

With the Signatures, there is no need to do any Lapping, the design eliminates any possibility of the Scope Tube being held in a "Torque Bind" which applies a constant unwanted pressure against the Tube Joints where they attach to the Adjustment Housing, and they provide an absolutely excellent non-marring grip on the scope.

Once you use a set of Burris Signature Rings, you will wonder why all Rings are not made the same way.

I have had the same problem as you on every CD action I put leupold bases on. How many shims did you put under your base? Could you remove a few? You would be better off using a level accross the top of your bases. When it reads level, install rings and check level using a 1 inch rod, it may or may not be level. I have gotten more junk rings and bases from leupold than any other company, so don't rule that out. Once you get it all leveled install your scope. BTW I forgot to mention you need to level the rifle in the vise first. If I misunderstood your problem just ignore this rambling and have a nice day

Chad

I would first forget about the street light and get a boresighter mounted on your rifle to confirm your concerns. If you cannot in fact get your rifle boresighted without utilizing all (or an unacceptable amount of) your scope's vertical adjustment, then I would follow the suggestions of other folks who posted, and look to my bases first. I don't like the rings that allow a large amount of adjustment in and of themselves, I would prefer to get proper mounts and a set of rings that are square and true, and hold my scope tightly without any inserts shims etc. I would call Talley Manufacturing and ask for their advice as well.

Good Luck--Don