Living where you do, I would look for a White Model 97 Ultra Mag or a Super 91. There is no better conical shooter and sabotloader proved to us they are good with sabots as well. The fit, finish, and quality of the rifle is hard to compare to. Also White has opened up their parts shop now. Although I never had a lot of problem getting anything for mine.
This White will do it all.
In traditional rifles I agree, a T/C Hawkins with a .54 caliber barrel would be my choice.