Yes it is. Sadly it is no longer made but while it is a.357 mag,Most people shoot .38 special through it . There has been talk of looseness after fireing a lot of high powered .357 mag ammo.
Soemcame with the square or Rounded Frame-You can tell by taking off the grips and looking at bottom of frame. Add those new Crimson Light grips and you got yourself an updated Model 65 !
It is not a large frame.
The frame size of a Smith and Wesson model 66 is K.
The smith and Wesson model 10 has the K service frame.
It is a K-frame.
No, it is an L frame.
K frame
Yes
The Model 13 is on a K frame.
Yes, a model 66 is a K frame revolver.
K frame
I believe it to be the K frame
I frame