As already sort of mentioned, you should give us a little more information so we can help. Do you have a rifle already, if not what are you looking at, where are you going to hunt and what game, what powders are available where you live, how important is it that you stay traditional or are you more interested in just hunting with less hassle, how old are the sons, how much do you want to spend?? There are a lot of options open to you so answering some of these questions will help. Many states have specific rules about muzzleloading rifles and loads.