I've had yea and nay opinions on this question: I have a S&W .38 Model 10/K frame, circa mid-50's. It seems to be in great shape. I've shot +P loads in it before I knew enough to inquire if this 1955-1956 revolver is stout enough to handle +P pressures on a fairly regular basis. S&W answered my email saying, "..sure, knock yourself out."(sic) On the other hand, a gunsmith said even though it is like new, a steady diet of +P may hasten the cylinder/backstrap's demise. What do you think? Play it safe and pass on +P, or go for it ?