Cayugad. If I had that little Tracker carbine with nothing else working, I think I would try some .451 185 grain or 200 grain XTPs/Gold Dots. Those short fat bullets might shoot in the 1:30 twist and would certainly do the job at tree stand distances.

At the other end of the spectrum, do you know if you've ever tried 385 grain Hornady Great Plains in that one?