Yup, 1.355 in length!
Damn near 2 ounces if cast from pure lead, two ounces is 875 grains.
There's really no reason for this other than the claim of having the biggest, baddest hand cannon WITH the biggest bullet you can find. It's hardly new in that there's been some 700 grain bullets available for some time by a guy up in Alaska. He even sells loaded ammo with those thumpers in them.
My daughters BF has the big Smith, he's one of those,"gotta have the biggest" types. I think after he shoots that thing with some of those thumpers, he'll change his tune!