"Chop jobs" are not too uncommon, especially years ago when S&W didn't offer that many models and people were too poor to buy new barrels and have them properly fitted.
Generally, the only problems with shortening a revolver barrel is the lettering on the barrel.
Usually the lettering gets cut in half and this looks bad.
On the S&W the only other real possible problem is if the barrel is shortened below the front latch you would have to install a ball lock in the frame.
On some shortened jobs, the ejector rod assembly has to be changed out.
As long as you cut off in front of the forward latch the only issues are replacing the front sight, and the chopped off lettering.