Each year I see a lot bullet wounds in all kinds of critters large and small, I would agree that the lite fast bullets can and do kill like lighting, but I will comment that I also see large slow bullets kill very well also, the difference seems to be the lite bullets do a great deal more meat damage then the slow heavy bullets,as with every thing to do with hunting every caliber, has it's up side and down side, big and slow usually has limited range, lite and fast more range, less knock down power on larger game.
I think most any modern hunting bullet will do the job when properly placed,then again I have never seen any caliber or bullet, kill like lighting with a gut shot. Rio7