Tom Selleck as Quigley Down Under, 1990. Co stars Alan Rickman and Laura San Giacomo.
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In the scene where Quigley demonstrates the rifle, he mentions that the bullet is paper patched, which might sound like some Hollywood mumbo jumbo. However, it's an actual technique common in the mid- to late-1800's to maximize accuracy/ precision. A thin layer of paper is placed around the bullet which is then used by the barrel rifling to spin the bullet fast enough to stabilize it during flight.
Sharps Rifles are now so inseparably related to this film that they are commonly nicknamed "Quigley guns." Sales for such weapons increased by over 1000% following the film's release, especially in the United States and Australia, and continue through 2013.
Matthew Quigley's gun is a replica model 1874 Sharps Buffalo Rifle, built by Shiloh Rifles of Montana. They are chambered in .45-110, which is a .45 caliber bullet propelled by 110 grains of black powder. This round was the most accurate and powerful in the world until the advent of smokeless gunpowders.

