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3/12/2010 5:16:07 AM EDT
My scope mount is off. Everything else on the rifle is pretty much just like I want it.
Optics consist of Leupold MK4 M3 10x, mount is an ARMS #18 and rings are ARMS #22L.
The scope sits about .25" from the rear aperture and there is  about that much room between the HG and objective end. Its as low as I can get it.


The scope is maxed out. POI is about 6 inches high at 25yards and more at 100. I took the mount off and reinstalled it trying to bump the front side of it up more but this thing is not meant to do that.

I went to Fastenal store this morning and found some steel shim material in .002, .005, .010 and .015 thickness.  
I picked up a roll of the .005 material and am going to see what kind of difference a shim makes under the front ring
(should raise the reticle to match up is bore .

Am I going to need more than one .005 shim?
I would rather have one shim sandwiched in than 2 or 3 of them.

I need some extra clicks under the expected POI as well... In case I decide to star using another projectile.
3/12/2010 6:41:41 AM EDT
[#1]
You can cut up aluminum cans to use as shims........

Are you SURE you are turning the scope knobbages in the correct directions?  I have done it wrong before.......

If you are running out of elevation with a Mark IV M3, something is seriously fucked up, like a football bat.
3/12/2010 7:44:32 AM EDT
[#2]
The arms mount is not exactly level with the barrel. I checked it last night in a vice with two different levels.

I was not turning the knob in the wrong direction. When the POI was too high, after my adjustment would make the POI move down towards my POA.. After 4 of these shots the elevation stopped moving. The yardage marker on my 168 gr BDC dial, I was moving it in the (-) direction yard wise.

IF I were turning the BDC in the (+) direction, then the POI would be moving up.

I think its the mount, but g-damn it Ive spend long enough bying this peice and that peice to find a scope mount combo I like, that sits low and looks damn good, just to find this out. I would have done sent it somewhere to get worked on but all the good people who work on M14s dont want to mess with the ARMS mount. I dont feel like paying 300$ for a new mount and then have to give the thing away on the EE.
I am about to call it quits on trying to get this scope to work on an M1A. Its been over a year and I still haven't been able to make it work, and have been actively trying.
3/12/2010 1:03:32 PM EDT
[#3]
If you want to lower your POI you have to shim the front of the scope.
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