So how much of a problem, will using a mount that has 20 MOA built into present?Yes, It is a 20moa rail
My intended purpose is for target shooting mostly 50 yards and beyond.depending on how much elevation you have on your scope's turrets, a close range shot might be hard to zero
Yeah I wasn't sure of the rail when I bought the mount. Though the scope is an Arken 5-25x56. Hopefully it'll have enough adjustment. If not I'll get a new mount.might be close to bottoming out at 50.....i can't say for sure, but 40 moa seems like a lot to me