Gun Hints

When getting on your horse(white button)you can push spur(B)at the same time and the horse will run without getting hurt. Also when at a SMALL fight instead of staying on your horse get off and use slo-mo to to kill the enimies. (this is easier too)

This is a tacticle fight as it's a shoot and hide fight when you first start, run to the right following round the block in the middle you will see hollister between to rocks use the rock on the right to hide behind as hollister comes running over to you shoot him and run round the rock as he comes into view shoot again repeat this and he will soon die, be carfull when doing this though as he sometimes changes the direction he runs in and comes round the opposite way.

Whilst fighting Reed he does not recover whislt on the grass, mount a horse as this helps to protect you and slowly walk up the ramp once Reeds head is just in view shoot him with the snipe rifle and quickly run back and hide by the wall jump off the horse and run after Reed shooting hime with the normal rifle in the head if possible make sure reed dosnt stop for too long if at all on the sand as he will recover repeat this and you will soon been rid of him.

If you take a barrel of TNT from the Badlands mine and put it on the north end of the old abandoned house's chimney. The explosion will open up a hole in the ground with unlimited ammunition.
To get there, get out of Dodge City. Make your way to the Badlands (use your map for directions) and head into the field that has several horses and buffalo. The house and the mine with the TNT will be right next to you.