This is +P rated, correct?
In past years S&W had problems with the forcing cones on several revolver models cracking after use. They were mostly magnum revolvers.
I suggest you shoot factory target .38 special ammo to be on the safe side.
Use what the manual says. My J's eat a healthy diet of +P. The Charter Arms undercover lite with an aluminum alloy frame does too. Was surprised to find my newest .380 warns not to use +P. For a revolver its a question of pressure but autos have parts that move alot and wear.
Did own a Charter once that was 1st gen. and not rated for +p. A trusted friend decided to go all 9mm, he gave me a baggie of what turned out to be some off the charts +P+ stuff. It took 2 rounds of this stuff to crack the forcing cone. Now I trust but verify. Lesson learned
Years ago, and I mean more than 30 years, S&W sold firearms that they thought would handle any magnum loads. Many of S&W revolver owners learned the hard way. Many of the older revolvers had to be returned for new barrels due to the forcing cones cracking or the barrels blowing out.
You can do want you like, since you are a big boy.
"Those who ignore history are doomed to repeat it". Not sure who said that, but it damn sure applies to our current world situation.
Here is another little story about S&W revolvers. It seems the early models (40s and 50s) had a common problem with the barrels coming unscrewed after many rounds. Their designer decided to drill a small hole in the frame below the barrel and insert a dowel pin. Thus the "pinned" model came about. Years later some genius said "why don't we thread the barrel the other direction so the force of the bullet tightens the barrel during each shot".
Thus the plain barrel arouse.