Shimming a scope mount for optimal zero (not optical zero)

Ok so I have an Idea for my scope that will sit on a new Cricket. My idea is not to optically center my scope but to optimize it for my own personal use.

Say the scope has 6 revolutions in total on each turret, that is 3 revolutions in each direction aka up and down from otical center. My most used distance is 25m in my yard, but I want to be able to zero my scope as far out as possible for long rage shooting. So I dial the vertical turret so there is only one (1) revolution left or one turn. This being up, aka if my gun is shooting over the poa I have a whole revolution left to dial.

Now I have five (5 ) revolutions to go downwards aka long rage, that means if I shim my scope mounts to zero the scope with this turret setting at 25m then I have the ability to dial five full turns of the vertical adjustment turret in order to move poa closer to poi in long distances.

What do you guys say about this? No need to worry about the shim damaging the scope, I found a way to shim it without creating tension on the scope itself.

steeldreams007

Participant

January 31, 2016 at 10:50 am

quote Cricket:

Maybe something like this?

http://swfa.com/Weaver-Tactical-AR-15M16-Flat-Top-Riser-Rail-P74631.aspx

yesss sir.. that would be more like what I have in mind. Thanks.

cricket

January 31, 2016 at 10:35 am

January 31, 2016 at 10:33 am

They have that also, search 20 moa at that website and you will find 20moa riser rails

January 31, 2016 at 10:28 am

Here is for 30mm tube, the above one is for 1″

http://swfa.com/BSA-Tactical-Weapon-1-Piece-30mm-Rail-Mount-P61920.aspx

Thanks Cricket, I was looking for something in this price range.

However, the thing is, I am looking for some kind of a 20MOA riser, so I still can use my Burris Zee.

January 31, 2016 at 10:08 am

January 31, 2016 at 10:07 am

How about this one?

http://swfa.com/BSA-Tactical-Weapon-1-Piece-1-Rail-Mount-P61924.aspx

January 31, 2016 at 9:32 am

quote keyser soze:

Just buy a 20 MOA mount. It’s the simplest solution. I have never been happy with a shimmed mount.

Keys, I have been looking for an affordable 20MOA mount, can you suggest something?

EDIT:

I am looking for a 20MOA riser or adapter, with my Burris Zee.

keyser-soze

January 30, 2016 at 11:07 pm

strietwise

January 30, 2016 at 10:33 pm

I have done this several times on my Matadors. It works.

If you want to change the slope of your scope rail a few degrees.
1) remove the scope rings and rail.
2) wrap the muzzle end of the rail in heavy cloth or cardboard.
3) put he wrapped end of the rail in a vise and apply some hand pressure to gently bend the rail muzzle end up
4) frequently take the rail out of the vise and lay it upside down on a flat surface to observe if any and how much you have bent the rail. Take your time and don’t over do it.
5) stop bending when the rail has about 1/16 (or less) rise (arch) in it (for scopes that run out of adjustment – poi is high and can’t be lowered any further)
6) remount the scope with the muzzle end ring as close to the end of the rail as possible.

The slight bend is not noticeable.

January 30, 2016 at 6:09 pm

Im just giving myself a lot of turret adjustment beyond 25m, if the scope is optically zeroed (turrets in the middle position) and i mount the scope and shoot at 25m it hits really low, so to compensate for that you have to crank the elevation turret, but if I go out to say 50m the gun will shoot low again, if I then want to shoot at 75 or 100m I might not have enough clicks left for that.

Do you see whag I am trying to do?

Anonymous

Inactive

January 30, 2016 at 5:47 pm

hum, so essentially you’re shimming your scope mount for optical zero to 70-80 yards, you’ll have a near and far zero ?

or am I missing something ?

~ Greg

Shimming a scope mount for optimal zero (not optical zero)

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