If you really want to experience the ultimate in fun try black powder loads. I started out shooting my 1871 H&R with smokeless and it was okay. I then switched over to the holy black and am having the fun of my life. With BP,the right bullet and lube, I have experienced no leading. As far as bullets, I am using ones that I buy from a friend. I will be looking for a mold here in the near future to do my own. I am loading265 gr bullets and am not sure what mold he is using right now.
Sorry, I forgot to mention that with the BP loads you don't need a gas check!!!