Sounds like your K-frames have really stood the test of time, which definitely gives me some reassurance about their durability. I’ve been thinking twice whether moving up to .357 would actually be worth it, but as you mentioned, with today’s ammo, the benefits seem pretty minimal when you consider the extra wear. I’ve mostly been practicing with standard .38 Special too but I’m really interested in how they hold up over the long haul with +P.I have a 64-3. It’s a very well built revolver. I have no idea how many rounds are through it. It has a nice lock up, even more so for a 40+ year old revolver.
I’ve thought about opening it up to .357. But with today’s ammo, it’s probably a marginal gain in performance. I still practice with .38sp and carry +P in all of my .38/357 revolvers. No point in accelerating wear, no matter how tough a revolver it is.
I really had no idea the -6 was the first model with that newer frame design and the integral cylinder stop lug. It definitely puts my mind at ease about using +P loads occasionally without worrying that I’m cutting years off its lifespan. I’ve always appreciated how well the 64 balances in my hand, and knowing that the later dash numbers are even tougher than the earlier ones gives me confidence it’ll stand the test of time. It seems like the real limit is just how much ammo I can afford to feed it, rather than any issues with the revolver itself. Also, do you notice that the -6 and the newer K-frames are noticeably smoother in lock-up and timing compared to the earlier models, or is it more of a subtle improvement that you only really notice after years of use?With the disclaimer that I am a S&W nut, particularly K-frames, and not a S&W engineer:
The 64-6 is the first with the newer type frame with the integral cylinder stop lug replacing the cylinder stop stud and other changes to eliminate potential weak points.
You’ll run out of money or years before you wear out almost any 64, especially a -6, -7, or -8.
They have been making K frame size .357s for decades. They make .357s in the smaller J frame. I don’t think you have anything to worry about.Do you think sticking with .38 +P is the sweet spot for these older K-frames, or do you believe they can handle a regular diet of hotter loads without any problems?