I gotta agree with Open Range... It was very realistic I thought... 'cept maybe the shotgun...
The shootout in The Matrix when Neo and Trinity rescue Morpheus is pretty sweet... "Dodge this..." is still one of my favorite scenes of any movie.
"Shooter" has some good shootout scenes as well...
"Therefore, wo be unto him that is at ease in Zion!" 2 Ne. 28: 24