I have a Vari X III 8.5-25 with two piece Leupold rings and bases.
My math told me I need 13 moa @ 500 meters. 13 put me on paper but I needed a little more. I ended up going up to 15 with almost no poi change. I then discovered it mechanically tops out at 16 moa, but the cross hairs stopped moving long before that.
I can get brass shims in any thickness. How thick do I need? I think I should go down about 5-7 moa, sound right?
Any other advice on shimming?