I recommend Deadlands. It's a 1800's style "Weird Wild West" game and It's very deadly. And the gun combat is realistic. You take damage to specific body parts: (Head, Arms, Legs, and Torso), and the wounds can fester and cause you to lose limbs (That's the downside of 1800's medicine.) But the system is well done. Unlike in games like DnD, where a level 1 guard can't hurt a level 10 barbarian. In deadlands, a well placed shot with a shotgun is going to take out any tinhorn. The Fate Chips keep the game less deadly for the players since they can spend these chips to stave off damage. Very great rules for duels and stuff. HIGHLY RECOMMENDED! If you want realistic combat that is PLAYABLE.