If you like BIG BORES!!! Check this guy out ,, he is building from scratch a 2 bore cartridge rifle for some luck soul over on the accuratereloading.com forum.
Yea cowboy likes real big bores a 2 bore is 2 balls to the pound, thats 8 oz of lead. About 700 gr charge, after regaining consciousness you need to get your head cheeked