I'm getting into hunting rifle silhouette this year also, as I'm not ready to invest in "proper" rifle...but I do have a tack driving 25-06 with a good scope and a 16oz trigger. I'll be tickled if I hit a turkey or ram at that range offhand.
I'm a firm believer that getting kids, and adults, into shooting sports of whatever kind is the future of our sport(s), and the future of our rights.