Blaserman:
Based on the results with my wife's rifle on springbok and warthog, I'd vote for a 7mm Rem Mag loaded with 140gn Barnes TSX. The light fast bullut shoots a hair flatter than your .222, it has more down-range energy, exit holes are not large explosions, it has plenty of shocking power and the wound channels appeared to be about 1.25 inches in diameter. Neither animal took a single step after being hit.
- browningbbr