How do you tell what kind of frame a smith and Wesson revolver is?
The small frame revolvers, Models 36, 37, 60, etc. were five
shot and they were built upon the "J" frame.
The medium caliber revolvers: Models 10, 19, 13, etc. mostly in
.38 Special and .357 Magnum were built on the "K" frame.
The larger guns like the Model 29, in calibers such as .44
Special, .44 Magnum, .45 Long Colt, and I believe perhaps .41
Magnum were built on the "L" frame.
Hope this helps.Actually the large frame smith and Wesson
revolvers are based on the N frame.this will include all model
20,21,22,23,24,25,26,27,28,29,57,and 58.This will include the pre
war models of 1917,and 44 hand ejectors,and 455 hand ejectors.This
will also include the new models 520,and 629.These are all N frame
revolvers.