I have used their scopes on smaller rifles, my Marlin Model 60 .22, a Mossberg bolt action .22 Magnum, and worked on another individuals rifle with one of their scopes. All have done very well... the .22 will shoot consistent 1 inch groups @ 50 yards with junk ammo, and the .22 Magnum is set to be dead on @ 130 yards and we shoot turtles on the lake at around that range... never had to touch it after setting it over a year ago.