10 plus pound rifles are specialty pieces or should be. If you arent shooting tiny targets at long range , normal targets at extreme range, or animals that simply should be hit as hard as possible, as close as possible then what do want to carry a heavy and/or clumsy rifle for?
Theres a reason why most hunting rifles are (more or less) between 7 and 9 pounds, between 6 and 7.5 mm, have a scope somewhere between 3 and 9 (and everything in between), and have a barrel between 22 and 26”.
The. reason being; general purpose huntng rifles are made to carry a lot and shoot a little. The little it will be shot is at animals that arent that tiny or huge, or dangerous, or tough, and more than likeiy not very far away.
If you stray very far from the general gun specs at the top, then you should be able to point at something special about your use.