You could spend weeks poring through IMFDB.org.
No argument with Open Range, yeah, a Stevens 1878.
There's another Stevens in Unforgiven, though Clint uses the 10 ga WR.
But how about Tombstone: Stevens, Meteor, and Parker doubles. And great dialog, too.
Doc Holliday: And you must be Ringo. Look, darling, Johnny Ringo. The deadliest pistoleer since Wild Bill, they say. What do you think, darling? Should I hate him?
Kate: You don't even know him.
Doc Holliday: Yes, but there's just something about him. Something around the eyes, I don't know, reminds me of... me. No. I'm sure of it, I hate him.
Sam