Those pictures you present hardly support this statement
The last time I shot a rabbit with a 308 the darn thing exploded and there was nothing at all left but blood and fur.
There's a whole bunch more left there than "Blood and fur" and that was with a bullet designed to expand on a small animal which is actually much bigger than the average rabbit .
I see legs , the head and the entire hind quarters untouched so if you had to eat that chuck there is still plenty of meat available even being shot with a 22 centerfire .
GameKing® bullets are designed for hunting at long range, where their extra margin of performance can make the critical difference. GameKing® bullets feature a boat tail design to bring hunters the ballistic advantage of match bullets.
So you used a long range big game bullet which is designed for controlled expansion and deep penetration at longer ranges and you want us to believe it blew up on a little bitty rabbit at 50 yards to the point it had more damage than that chuck shot with a 22 centerfire traveling at 3500 fps ?
A big game bullet at that range on that small of an animal would blow through without expanding and leave a small little hole .