If I want to get an additional 20 moa cant on my scope are shims an acceptable means of doing so? I've read that it was fairly common in the past to use brass shims, that were just a few thousandths in thickness, to get additional elevation adjustment out of the scope. I was looking at Badger Ordnance's 22 moa riser as an option, but if I can save $90.00 by using the shims, I would go that route. My main concern is obviously holding zero with recoil while using shims.
Rifle Scopes Scope shims?
- Thread starter jjseman
- Start date
Re: Scope shims?
Yeah...I think that's an old school way of doing things. My question / concern would be: Are the two bases going to be parallel to one another...if you're using a two piece base. If they aren't...you'll be bending the scope when you secure it to the bases. If it's a one piece flat base....what kind of stress are you putting on the front screw(s)...since you'd have to loosen them to raise the rear and re-torque down everything. I suppose you could add some bedding to the front to compensate for the unequal surface created by raising the rear.
I just bite the bullet and get the proper machined base. For me...I feel it's a small insurance policy...along with really good rings...to help protect my investment in glass. Scopes are just getting more and more expensive. JMHO
Wayne
Yeah...I think that's an old school way of doing things. My question / concern would be: Are the two bases going to be parallel to one another...if you're using a two piece base. If they aren't...you'll be bending the scope when you secure it to the bases. If it's a one piece flat base....what kind of stress are you putting on the front screw(s)...since you'd have to loosen them to raise the rear and re-torque down everything. I suppose you could add some bedding to the front to compensate for the unequal surface created by raising the rear.
I just bite the bullet and get the proper machined base. For me...I feel it's a small insurance policy...along with really good rings...to help protect my investment in glass. Scopes are just getting more and more expensive. JMHO
Wayne
Re: Scope shims?
As stated above, wouldn't mess with a 2 piece base. You would need to shim both so the tube axis is the same in both rings. If not your will bite your tube and have a nice ring mark.
One piece base, you will need about .028" of thickness to get 20 moa. Will have to bed the base as well. If not, when you torque the base it will cause the receiver to flex. You will notice your bolt sticking a bit as you cycle.
As stated above, wouldn't mess with a 2 piece base. You would need to shim both so the tube axis is the same in both rings. If not your will bite your tube and have a nice ring mark.
One piece base, you will need about .028" of thickness to get 20 moa. Will have to bed the base as well. If not, when you torque the base it will cause the receiver to flex. You will notice your bolt sticking a bit as you cycle.
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