A benefit of learning this was to determine the revolver's ability to shoot +P ammo. I wrote S&W with this question:
"I have a safety question regarding ammunition to be used in my S&W Mod. 60 .38 special, S/N ANP77XX, produced (I believe) in the mid-1980s. May I safely use +P rated ammunition in this revolver?
"Some sources indicate that any S&W handgun produced in recent years is capable of handling the pressures involved. Since I cherish my Mod. 60, I am loathe to jeopardize it, or myself either for that matter.
"Thank you."
A day later I had my answer from S&W:
"The gun is from the 1980's and we would not recommend shooting plus p ammo in your gun. The gun was never pressure rated for the newer ammo."
So, there you older Mod. 60 owners, is your answer: don't shoot +P ammo in your snubbies made in the mid-'80s if they're not rated for it.
Tom