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I know its last minute but a buddy decided he could go deer hunting next week if he could borrow a rifle so I offered him my 30-30, it previously had a scope on it but that all got sacrificed when my girlfriend got a marlin 44rem mag last year. So I went and bought a new weaver base and borrowed a Leupold 2-7 and a set of rifleman (LOW) rings. I tried to bore sight it but it was way low, ran out of elevation it was so low, thought maybe I was doing something wrong with the bore sighter since I had just got it. Took the rifle out and shot it at 25 yards and it shot at least a foot low. Took the scope off and tried the iron sights for him but they are 9" to the right at 50 yards. I can try to move the front sight, but I would much rather have a scope for him. Do you think putting a set of high rings on would help out do I need to shim the base?
 

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Burris Signature rings come with eccentric inserts that will allow you to shift the scope without shimming. That would be my first choice.
 

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I've had to shim a couple of rifles lately.........025 or .030 brass shim stock from ace hardware cost about a buck fifty.........
 

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I would think that high rings would just make the problem worse. You are shooting low because you can not get the cross hairs low enough for the bore and line of sight to cross at 25 yards. This should not be a problem. The scope is in fact pointing way up in relation to the bore. You have either got a base that is way off or the scope you are trying to use has got a problem. There is something definitely wrong. I have mounted dozens of scopes and have never had that problem. For something quick, I would shim the base, just remember you will have to shim the back of the base not the front. You have to bring the line of sight down to cross the line of the bore. For a better solution the Burris rings mentioned are the ticket. I have never used a bore sight. I have always sighted down the bore and then aligned the cross hairs to it. Like I said I have never used a bore sight, but when adjusting the scope when sighting down the bore, I have to turn the knobs the opposite way I want it to go. For instance, I need to turn the knobs down to get the bullet path to go up. Does a bore sight work the same way?
 

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You might try reversing the base. I don't know what type 30-30 you have but if it's a side mount winchester it may have been drilled wrong or for an adjustable mount. If a Marlin then reversing the base may help. Using a bore sighter the scope cross ghairs are adjusted to the center of the grid pattern. The lasers use an aiming point projected on a target on the wall. Don't shim the scope in the rings, just the base.
 
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