so im now lookin at getting one of the walkers or dragoons or whatever they are called, the big sucker that can handle 50 or 60 grain loads. i know very little to nothing about these guns, and really dont know which one i want. looks like there are 1st, 2nd, and 3rd model dragoons, and i dont know if ther is just a walker colt or what. could anyone help with clear this up a little for me? thanks guys!