Long range scope setup

TwoHands

Inactive
I have a rifle that I want to use for long range shooting. I have a load worked up thats will be good for woodchucks and targets that get out past what my 22-250 can handle in a new field I will be shoting next year. I have been doing the load devolopment at 200 yards and now I need to shim my scope to get on target with the optical center closer to POI at longer range. I want to shim my rear base up and lap the rings paralell and remount the scope.

My scope is a 8-32 with 1" tube and 1/8 MOA clicks.
My software says I'm looking at 130" to 200" of drop at 800 yards. If I take the average and put the optical center
at a POI 800 yards away with 160" of drop that means I have to be 20" high at 100 yards right? How do I figure the amount of shim needed to get there? I do want to use the same rings...whole other story.
Help!

Thanks! J
 
And Again!

IIRC, a beer can is about 0.003". One layer gives around 1" to 1-1/2" at 100 yards. 20" at 100 yards means shim thickness of 0.040" to 0.060".

If TFL's "Search" is working, hunt up some of the previous posts on this subject. Wasn't too long back...

FWIW, Art
 
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