Repete and 6mm-06 are you adding the dot to the original duplex or changing out the duplex for crosshairs and a dot?
I have a couple of older Weaver K-3's with crosshairs and dots. I find that they are just great as long as it's nearly full daylight but really wash out at dusk and dawn where my duplexes are still visible.
+1 to RePete, you'll see the barrel at the bench for awhile but when there's fur out there you'll never notice it.
AWS