I have a pair of six-inch "Old Model" Blackhawks in .357 Magnum.
They are supposed to be used in Cowboy Action shooting and maybe they will this summer.
The first one was bought used in 1979. It was my most used centerfire handgun for years. I hunted small game with it, shot Hunter's Pistol Silhouette with it, and even hunted deer with it a time or two. Although fairly long, it carries very well in the woods.
The second was bought two years ago and has an auxiliary 9mm cylinder. It's not as accurate as the .357 cylinder but is fun to have around.
Both guns shoot well with my .38 reloads and I use them a lot more than .357s. They will handle hot .357s and, probably better than some of my double-action .357 revolvers.
I came close to buying a Blackhawk in .45 Colt a couple of times. Also nearly bought a new model in .41 Magnum, but I prefer the older Blackhawks so passed.