David,
I can see you are using a Burris scope, I can't see what model?  I have noticed on some of your setups your using a rifle scope?  On my 17 HMR II an 22 LR I have rifle scopes on them and it works fine for me.  My eyes aren't what they were and the rifle scope is a better focus.   You do beautiful work David, and I like my target forend, thanks!!!
 
Joe