You will get that tunneling effect if your scope (Weaver V10) is set too far forward. Try moving it back a little. I had the same problem until
I moved it. Got rid of most of it. I will take a little tunnel in return for better clarity, which, as I said, to me anyway, is better than most of the
scopes in the $200 price range. The Weaver Classic's reticles are bolder and it's really helped me getting on deer quicker.
