~*Dead Eye Theory*~
Alright, here's my personal head-canon about what Dead Eye is and how it works:
-Dead Eye is some type of curse or gift, its something supernatural, something bestowed by an entity of the west or similar concept
-When the wielder dies, it passes to the next host
-Arthur Morgan had it and when he died, it passed to John Marston and then on to Jack, etc
-Perhaps the wielder, though given a gift of strength and skill, is destined to die - the cost of using Dead Eye is a sacrifice to the entity that gave it to them
-Its why John Marston is suddenly a better shot and a more powerful protagonist in RDR1 versus in RDR2















