My choice for what you discribe would be a 7 TCU in a 14" tube. Mine is very accurate the only thing I've shot in it has been cast Boolit mild recoil and low in muzzle blast compaird to a 223 and loaded with a 120 Nosler BT should be able to harves deer out to 150 and maybe 200 with shot placement you would have to do your home work on that though.
Flip