Yes you can as stated above or you can simply forget about it and adjust your scope as needed. Use the base adjustments as much as you can(if you use an adjustable base such as leupold) then adjust with the dials. If you are still so off base that the scope won't zero then the problem is with your mounting. Whether you zeroed it beforehand wouldn't make a hair of a difference.Its basically a non issue. Your scope as mounted has a certain range of adjustment and you are in that range or out of it regardless of where in that range you startfrom. Think about it.