I’d use a 12 gr cork in a 300 whisper if forced to do so. That way there’d be no wounded animal. Seriously 125 gun bullet at 2k FPS? Guessing here, I used to own one. Not saying it wouldn’t work in some situations but the animal deserves better. Seems a stunt at best. I do know I hunted many years with handguns and they can kill above their energy. I hit a whitetail in the ribs at 25 yards with a 7mm T/CU. It was a decent buck and a 125 gr Balistic Tip at 2k FPS. Lost that animal after a loooong track. Best guess it blew up on a rib and only got one lung. Was out of a TC 14” Contender

Shawn