RDR SPOILS
I learned there was a campaign cover in the game called a "military mountie hat"
I HAD TO HAVE IT.
Someone who spawns randomly in Fort Wallace wears it, once knocked off it can be worn and saved under stolen hats.
So I went on an epic mission, I figured out that they keep spawning so I had get inside. Using a wagon to hop the wall, and fight off the soldiers. 200 rounds of express ammo for my volcanic pistols, all 120 shells for my pump action shotgun, and 240/400 rounds of repeating ammunition, all my health and dead eye tonics.
I FUCKING FOUND IT!!!