Keep trying Mike. Everybodys different, and while a lot of us may not think a 44mag kicks very hard, to others it does. Its a big, loud, intimidating cartridge to look at. If you handload, try some Trail Boss loads to get him started.Heck, if you dont handload, send me a pm, and Ill put some together for you, to let hime try. We gotta keep our kids in the shooting sports. My 16 year old step daughter doesnt like to shoot her 243 a lot with full power loads, but she loves the Trail Boss shells.
The Hogdon site says a 240gr cast bullet at a little better than 900 fps out of a pistol, from a rifle I would think it be a little faster. Id give it a try.