I am using the muzzleloader to hunt deer and coyotes with my son, so I can't imagine that I will ever need a heavy bullet like that. I am kind of recoil sensitive too so no big loads in my future.

My son was born to hunt, that is all he does or wants to do. He started shooting a bow at the old age of 3. He shoots almost daily with a bow or muzzleloader. He is not interested in centerfire rifles or shot guns so much, but he will shoot them if he has the chance. You should get your son out and let him shoot your ML, he may love it.