When the Heavy Masterpiece lineup came out around 1951, S&W varied the barrel taper and rib width so all calibers weighed the same. An 8 3/8" K 22 weighs the same as an 8 3/8" K 38, 42.5 oz. Might you feel a difference in balance because the barrel profile had to account for the mass of the cylinder as well? Maybe you can, I cannot; at least not in the 4" and 6" guns. I do not have an 8 3/8" K-xx.
Excellent information -- I had
NO idea!
For a short time, I owned a S&W 625 with the five inch barrel. Fairly common on the 625, but a very elusive barrel length on other S&W revolvers. I went in to the gun thinking "Goldilocks"... My thought process was:
"my 686 with full lug and six inch tube just feels muzzle heavy and unwieldy at times... this one is FIVE inches, full lug, and will feel PERFECT!" Well, perhaps because it was N-frame, or heck, I don't know...
...it wasn't the Goldilocks I had hoped it would be. The five inch barrel just felt light, it felt like a 4-inch L-frame in my hands.
To me, I guess I thought because it had the bigger hole in the barrel, it just didn't feel as I thought it would.
I'm even more interested in a Model 14 with the 8 3/8" now!