A revolver. Chambered in .45 Colt (I love single action wheelguns), .44 magnum, or .454 Casull*
*My wrist hates this, haha.
Here's some contenders:
Ruger Vaquero, .45 Colt
Some custom made revolver in .454 Casull. Hot hot!
S&W M629 with a six and a half inch barrel, .44 magnum. The grips have got some bite to them, I might swap them out for some Hogue monogrips. OMG ARTISTE PHOTO!!11
[screenshot]http://beerbaron.kibblesnbits.net/SA/Photos/revolverhighanglel.jpg[/screenshot]
As for rifles and shotguns, I could go on and on. Let's just say:
Shotgun: Saiga-12. One eighteen inch barrel for throwing slugs, and a fourteen inch barrel for shot.
Rifle: FN FAL.