a gut shot is a gut shot.
The ONLY way I can see it making a difference is pure bullet diameter being just say .017 wider and cutting an vessel... and thats a stretch.
Given the right bullet choice, the 243, especially on hill country deer, is never under gunned. I've taken them way out close to 600 with no issues and that with the old 105 speer cup and core. Granted the 80s we were told to start with were the WRONG bullets... I can't even count how many I killed with 90 fmj to save meat years ago because a mentor did it that way...
80 ttsx these days.. its good to way out there.
I"m not going to say larger isn't a bad thing, but its sure not needed.
I could kill the majority of the deer we kill with a bit more patience and a 22lr.
I kill a LOT with a 300/221 and a 194 out to 200 yards at about 900 fps MV... check the lack of energy there...
