Your entry / exit hole comments remind me of the wound imparted on a whitetail buck by a 300 grain Nosler PP from my .45-90 at a range of 110 yards.
Upon entering the cleaning barn, a man commented on the size of the exit hole and my guide told him that was the entry and rotated the suspended deer to show that the exiting bullet has taken out three ribs! Only two ribs were blasted going in.

That was Winchester Supreme .45-70 ammo rated at 1800 +fps and has unfortunately been discontinued.
Fortunately, I had purchased a good supply of the Nosler bullets for hand loading in .45-90 brass and at 2200 fps MV, it is devastating on thin skinned game; even taking a big goat-eating leopard in Africa.