I have a H&R Plainsman 865 22 cal that I got close to 25 years ago for Christmas. Needless to say it has not seen any action in over 15 years. I just ordered a magazine and a front site tonight from Numrich. I want to clean it up and give it to my son. The question that I have is how to mount a scope on it. I am guessing there where a few models made because I have read that there are groves on the receiver. The only groves on this one are only an inch long. Can this gun be drilled and tapped for a scope mount? If so are there any recommendations for someone in the Pittsburgh area?