The 1" and 30mm Ultradot red-dot sights have held up well on my Ruger Super Redhawks in 44 Magnum and 480 Ruger. The 2x and 4x Leupolds also are quite good and, if you can fine one, the Bushnell Elite 3200 2-6x32 is an excellent scope that, unfortunately, Bushnell discontinued last year. I prefer it to the Leupold 2.5-8x variable.
