The shot was only at 295 yards.
We did not find an exit. We ended up quartering it without gutting, so we did not inspect the chect cavity from the inside. There was a lot of damage on the entry side, and three ribs were completely broke way up high by the backstraps. The off-side shoulder was still fine, and we figured there was no exit since from the shot angle the far shoulder would have been where the exit hole should have been.