Bought a model 69 .44 combat magnum last December. Liked it so much I bought it's smaller(?) brother a few days ago. The model 66-8 combat magnum, .357 magnum. 69 is an L frame and 66 is a K frame. When placed one on top of the other I see no differences in the overall frame size. Both shoot great! Pic shows model 69 on top and model 66 on bottom.