This is presumably .45 Colt, not .45 Auto. If James Arness is biting down on a .45 ACP, they must have had continuity problems with that episode. Or maybe you were thinking of the other Matt Dillon — did he have another Doc Adams? That still seems like it would be a continuity issue.
I’ll ask Milburn Stone next time I see him. He seems to know a lot about these things. 
A S&W Model1917 is what all S&W Model 10 revolvers want to be when they grow up 
No body ever named a cheap malt liquor in honor of the 10mm.
Just sayin’
As if that wasn’t confusing enough, you’ve got 9mm, 9x19, 9mm NATO, 9mm Luger, 9mm Parabellum
Somebody always gotta bring the lightweights to the Big Boy party. 
I didn’t realize this was a 10mm kind of party
Umm .45 party. 
Miss Kitty had HIV/AIDS.
It’s not a party until the Schofield gets here.
How about 9 mm Kurz, 9 X 18, 9mm Makarov, 9 X 21, 9 mm Largo too. .38 Super and .38 ACP. .45 GAP too. I know 1 is obsolete, but it really gets crazy as far as calibers. Bottom line, know your firearm and what to feed it.