I knew an old guy years ago who had a really nice gun collection that included a couple of British Lee Enfield 303 rifles. They were fun to shoot, powerful and accurate. Back in the day, we use to a go to the gun shows and get all kinds of cool military surplus ammo, white and red phosphorus rounds were especially wicket. Sadly, after he passed, his family began to fight over his money and property. I have no idea what ever became of his extensive gun collection.
But anyway, cool project! Good luck and be sure to let us all know how it turns out. :?