I don't have a ton to choose from so my decision is pretty easy.
TC Omega w/ 3x9 BushnelDusk to Dawn Circle X. Loaded with 300 gr Nosler Partition PP, 110 gr T7, Win 209 primer. That rifle will shoot 100 yd MOA and that load has plenty of oomph.

and the .54 GPR flintlock & PRB for the up close and personal feeling.

I contemplated the 50 cal Renegade caplock with a conical or the Deerstalkers flintlocks but I would want to do it like the old timers did.

HA