I'm thinking of getting into cap and ball shooting and I really like the look of the 51' colt navy but I want a .44. I'm not a history freak in the sense that everything has to be totally accurate but with the look of the 51' and a .44 you can get both in the dragoons. I've been looking at the 1st, 2nd, and 3rd model dragoons but can't find the differences. Any help would be appreciated.