Hi all....first off thanks in advance to all that assist in this subject. I recently bought a Ruger M77 Mark II (.243) and found a Buckmaster 4.5-14x40 scope at what I feel was a good price but the ring set that the gun store sold me, a set of Leupold ringmount part #52306, don't seem to be correct as the scope sits 3-4 feet high. I have gone to Leupolds website and it asks if my gun is a dovetail or round receiver and being as I am new I am not sure how to tell. Thanks again to those that can lead me to seeing what I am trying to shoot and not above. lol.