I recently ran an Indian Mutiny game using 54mm miniatures at my local club. I began collecting Indian Mutiny miniatures five years ago with a view to playing small skirmish games. Now I have over 100 figures per side, representing (I believe) almost all of the makers of Indian Mutiny figures, past and present. They are almost all metals. I used The Men Who Would Be Kings rules from Osprey which are my current favorite colonial rules. I tasked the British players with taking the Mutineer side of the town or breaking half the Mutineer units by the end of twelve turns. Otherwise, it's too easy for the British to stand back and blast away at the Mutineers with their superior, longer range weapons. It was a very close game, with the British routing seven out of thirteen Mutineer units on turn twelve. They only lost two of their ten units, but they were down to one or two men in three of their units.
I would like to also try the colonial variant of About Napoleon. Is it available as a download?