not sure how this applies, the colt was a single action..ie means the hammer has to be cocked then the trigger pulled, the famed fanning of the hammer.<br/><br/>The bulldog is a double action meaning that you ahve to cock the hammer just once then the trigger fires the bullet and recocks the hammer....<br/><br/>lol have no idea how that would effect speed or action but i would guess it would make the bulldog a bit faster firing compared to the colt..of course with the epic dexs it shouldnt matter a lot, we can fan the hammer way fast.<br/><br/>Phaia