Schultzy if I am not mistaken the average Black bear taken in Minnesota is around 115 pounds. It's tough to go out there and drop a 300+ pound bear. I shot a 175 pound sow and she was 6.5 years old.

But advice above is good. You could always hang something up high enough so you know if the bear reaches it hes the size you want. Otherwise small to the side ears squared nose.