There are a few things to keep in mind if you happen to find yourself in a a SW:
If someone shoots you from a far distance, always falls of your horse, no matter if you’re hit or not. In doing so you’ll get the chance to shoot the assasin.
If you’re hit by a bullet, just pretend to be dead. No one will shoot you in the head just to make it sure.
Always carry a cardgame, a bible or a cigarette case in your chest pocket: Many villains are fond of going for the heart shot.