Both bullet choices you mention are good bullets though at their limits at 200 yds. But what are you pinning on the Shockwave? There is not a magic bullet that will turn a gut shot into a DRT and, short of a 50 BMG, few that will reliably give you any sort of decent trail off a gut shot. I've trailed deer gut shot with rifled shotgun slugs over a mile for people and never found them, little or no blood. Same with the other, if the angle was bad and you missed the vitals I'm not sure what switching bullets is going to do for you.