Have a Synthetic Handi 44.... Bought it and it had a Tasco scope on it, thought the eye relief was too short, so I removed it and mounted a red dot. It works, but I miss the magnification. Found a Bushnell Cantilever slug gun scope that I'd like to mount on her. 3-9 x 40 with a 1"tube..... Do I need to buy Low, Med, or High mount rings for it?