I have a 7mm STW carrygun.Been trying to decide on a scope. I have looked at the Burris Blackdiamond 3-12 and the Leupold 4.5-14 LR. Does anyone have any experience with the Burris target knobs? Are they repeatable? The Burris has a better field of view, however it is heavy, but seems to have very good optics. Also, how dependable is the side-wheel focus on the Leupolds? I plan on hunting deer and blackbear.I'm also limiting myself to 600 yds.Any advice or suggestions would be appreciated.