I have a Remington Target Master Model 510 that was my Dad's when he was a boy. It's a great shooter but my own eyes are beginning to age now and the open sights aren't as easy for me to use. There is no real base on which to mount a scope base as the "receiver" portion of the gun is round - an extension of the barrel. DOes anyone have a suggestion on scope rings, how to drill & mount? Will attempt to post pic so you can see... Thanks in advance.