The "J" frame is a smaller framed, 5 shot cylinder, snubby, pocket pistol.
It was never designed to blast 5000 rounds a year. Great for concealment and the nightstand. Ya want more, they got more models!! K, L, X.....even the damned Hillary Hole models!! :biglaugh:
They also make short barrel, steel .357 models. I think they weigh about 23 ounces. I don't recall whether they are considered J frame or K frame.
There is also an all steel J frame .38, the Chief's Special. I think they still make them.