Long tapered shim for one piece mounts? 200 MOA.

[addertooth]

I see people paying big bucks for one piece mounts which are 200 MOA (to point the scope body downward to compensate for drop).
Is there any reason why a tapered shim, the length of the mount (placed between the mount and rail) would not achieve this goal with a standard scope mount?
I ask this because I own a milling machine, and (on the surface), the idea just makes sense. That, and if you decide later you only want 150 MOA, you can change out the shim, as versus replacing a mount. As long as the taper is smooth and continuous, there would be no risk of twisting or torqueing the mount (and putting stress on the scope tube. A simple sine-bar setup would achieve a very precise angle on the mill.

Am I missing something?

 

[beetroot]

I see people paying big bucks for one piece mounts which are 200 MOA (to point the scope body downward to compensate for drop).
Is there any reason why a tapered shim, the length of the mount (placed between the mount and rail) would not achieve this goal with a standard scope mount?
I ask this because I own a milling machine, and (on the surface), the idea just makes sense. That, and if you decide later you only want 150 MOA, you can change out the shim, as versus replacing a mount. As long as the taper is smooth and continuous, there would be no risk of twisting or torqueing the mount (and putting stress on the scope tube. A simple sine-bar setup would achieve a very precise angle on the mill.

Am I missing something?

People pay big bucks for adjustable mounts (or optical devices)that allow you too sight in at a normal distance and shoot normally with no issues but then have the ability to shoot ELR.

With a permanent 200moa cant you are going to be stuck shooting only ELR.
With my current set up on my 22lr I can shoot out to 400m before running out of elevation, if I could add a further 100moa of cant I could shoot 0-650m.
With 100moa permanently built in I'd be stuck only being able to shoot from 400-650m.

If you wanted to only shoot ELR then your idea is a fine one but it comes with limitations.

 

[1moaoff]

I see people paying big bucks for one piece mounts which are 200 MOA (to point the scope body downward to compensate for drop).
Is there any reason why a tapered shim, the length of the mount (placed between the mount and rail) would not achieve this goal with a standard scope mount?
I ask this because I own a milling machine, and (on the surface), the idea just makes sense. That, and if you decide later you only want 150 MOA, you can change out the shim, as versus replacing a mount. As long as the taper is smooth and continuous, there would be no risk of twisting or torqueing the mount (and putting stress on the scope tube. A simple sine-bar setup would achieve a very precise angle on the mill.

Am I missing something?

The way rings attach to the base would preclude shimming between the rings and base.

 

[mark82]

I think he means 20 moa not 200. And I think what he is intending is a shim between the reciever and the base (not the base to rings).

This might work but it would depend alot on the surface contact area between base/reciever. Different recievers have different profiles. A flat shim would be problematic in assuring the base is very square and flat on the reciever. So you would need many profiles and bolt locations to cover all the different recievers. I suspect that by the time you cover all those issues its just a simple to machine a whole new rail.

 

[THEIS]

Hi,

No he is meaning 200....Notice the "Can go to 150" comment....
No need to shim a 20 when you can get that amount from any one of the numerous unimounts, so why add another part to the equation????

Sincerely,
Theis