Guns I have shot...
410 and 20/20 shotgun, 357 pistol and rifle, 9 mil, 38, and 45 pistols, .22 and 30/30 rifles, 50 Cal(actually still in use in the military even though it was made in WWII and had over 150 kills in its use), M60, M-14. Probably others but I can't remember what they were.
Other weapons...
M-79 grenade launcher, Tomahawk Cruise Missile.
Favorite? I've always cherished M60s. But I'm not really sure why.
But I really prefer blades. Fixed blades. Daggers, knives, or swords. And not the fantasy type. I abhor those. I like solid, strong, and beautifully simple blades that are designed for hard use. Even if I never use them to cut anything.