Push come to shove, ANY .38 Special revolver ever made is fine with +P.
Were it to be any other way, and damage were to come to you or your property, you can count on a visit from the Plaintiff's Bar---soliciting you as a Plaintiff in their class action law suit. Once that's accomplished, we can count on TV ads urging all with injury or property damage to call 1-800-Bad-Ammo so as to sue the pants off of the bad old ammo company(ies), and make all of you rich.
That said, in the real world, the bad old ammo companies are well aware of all this, and have Risk Managers and staff on site to see to it no such thing can happen. That's because the Momma's of all these folks didn't raise no dumb kids.
You may find it enlightening to compare the performance of today's +P ammo with the performance of regular old everyday .38 Special ammo from back in the day----the day before they downgraded it. That said, we can do that right here and now:
We'll do muzzle velocity for the sake of simplicity---and because it's easy to look up. We'll look it up for the plain old 158 grain bullet load---mostly because that's about all they had back when.
SO---------------------
From 1925, we have that at 858 fps.
Today we have that at 755 fps.
For today's +P load we have 890 fps.
You can see right off why some folks are jittery about using +P loads----or maybe you can't. I can't.
Ralph Tremaine
Actually, now that I think about it, maybe it costs more to use +P---maybe that's what the + is all about. When it comes to money, some's good, more's better, and too much is just right!! What better reason to come out with something "new and improved" to sell?
A belated addition: +P ammo became available shortly after the ammo companies became aware of the rapidly increasing number of concealed carry credentials across the country. They then said to themselves, "Self, you know what?!! We ought to come out with some souped-up loads for these folks--it'll sell like hotcakes!!" And they did, and it did, and they all lived happily ever after! Well maybe all except for the folks who were paying more for the souped up loads that weren't souped up very much at all!! All this came to pass because of the success of the folks who made it big with better mouse traps. And speaking of better mouse traps, we had a mouse not all that long ago. I saw it first----it came across the counter of the back porch sink, jumped down to the floor, and ran under a piece of furniture---a so-called "dry sink". It scared the living bejesus out of a visiting aid, who let out a screech that scared the living bejesus out of me, and RAN into the kitchen!! The Boss Lady called our pest control company. They come once a month, and spray around the house to keep the critters from coming in. They showed up with some mouse traps the likes of which I'd never seen!! One of them was a "sticky trap"---a little flat tray with sticky stuff on it---and a place for bait. The poor mouse goes for the bait, gets stuck, and can't get off. Then it starts jumping around, "sticky trap" and all, and one of them made it out into the middle of the floor on the back porch before it got tired of jumping around. It fell to me to pick up the sticky tray, mouse and all. I carried it outside, and hoped some mouse eating critter would come along and end its misery ------and not get stuck in the process!