Folks, this is a question about shimming a scope that ran out of internal adjustment.
I�m not a gun smith, I�m a simple guy trying to do a friend a favor.
My friend�s rifle shoots high at 100 yards. He got all the adjustment out of the scope he could, but it still shoots high.
He asked me for help.
It�s been long enough that he isn�t sure how high it was. Maybe 8� to 10� high at 100 yds he thinks.
Here�s two questions for you.
Should I shim the underneath of the rear base where it contacts the rifle receiver, or shim the underneath of the scope when it meets the base?
Also, is there any way to determine ahead of time what thickness shim I should use? I have some good stainless shims, either .015in (.381mm) or .020in (.508mm) available, or I can get other thicknesses.
Thanks in advance for your help.
Shim the front and every .001" of shim material,will move impact 1" at 100yds. If he's driving turrets,get the erector towards the bottom third for his initial zero,if drivingthe reticle,mechanically center same.
I'd wager that he has quite a bit of windage cranked in too,which much negates available vertical erector travel..............
