Plus-P ammunition has not always been on the meek side, and even today some smaller companies and custom reloaders turn out some stuff that pushes the envelope.
At one time I had an opportunity to examine a fairly large lot of older Smith & Wesson K-frame revolvers that had been traded in by a large police department. All had been extensively used with nothing but 125 grain Plus-P ammunition from a big-name producer.
I discovered that an extraordinary number of them were suffering from cylinder end-shake (back and forth movement of the cylinder caused by the end of the yoke barrel being battered by the cylinder), and of the total more then half required attention before being placed out for resale. It was not hard to understand why they had been traded in on new ones.
In most, a casual buyer wouldn’t have discovered the condition.
Perhaps the two gunsmiths mentioned above had experienced something along the same line that I did.
In fact when it was first introduced there was an understanding between the law enforcement buyers and ammunition companies that extensive use could cause accelerated wear.
I would much rather baby my small collection of older revolvers then take a chance of abusing them, especially since repair part stocks keep falling.
Others can do as they wish.