For those who are interested, here is an article about the rifles used in "Quigley Down Under" starring, of course, Tom Selleck. TS might make a better leading man cowboy character than a detective!
Sharps Model 1874 in 45-110 (also called 45 x 2 7/8")
http://findarticles.com/p/articles/mi_m ... cra.2.a.33
Matthew Quigley's Sharps rifle
Moderator: Styles Bitchley