I have a 7 1/2" Ruger SRH ,I use either a 30mm Millit red dot sight or a Bushnell 2x6 x 32 scope . The red dot is used for most hunting and the scope is mostly used shooting groups. Both have held up for several 1000 rnds . The Millit red dot 1" or 30mm fit the ring spacing ,not all do. Wear your ear plugs !!!!!!!!!!!!!!!!!!!!!!!!!!!!!