I recently picked up another wheelgun. This one is a first year production S&W Model 586 "Distinguished Combat Magnum" .357 Magnum.
The idea behind the whole L frame family was to create revolvers, strong enough to withstand a steady diet of full-power .357 Magnum ammunition. K frame revolvers like Model 19 are not strong enough for constant usage of the powerful ammunition using the light 110 to 125 grain bullets.
http://i7.photobucket.com/albums/y26...r/IMG_5485.jpg