Well, howdy!
I just watched a Gunsmoke that guest starred Forrest Tucker as Sgt. Holley. He played the same character in at LEAST 2 episodes. Any-hoo, he was totin' around and talkin' 'bout his S&W Model 3 pistol and facing Miss Kitty - who had HIS rifle - and saying that the rifle was a Henry and both were in 44 Caliber and BOTH would "blow the hump off a buffalo at a hundred yards."
They must have both been chambered in 44 Magnum.
Or not. Tee-Hee-Heee!
It WAS an S&W in his hand. However, the "Henry" was an 1866 with the front wood removed. A "Hollyweird Henry"
I'll say this; I've seen some cool old guns on that show over the years - not EVERYTHING was a Colt Mod. P or an 1892 Winchester, as MANY movies are/were.