If you want to be proud of a large animal you killed then you need to kill it with a spear.
Seriously where is the challenge in killing a Buffalo with a high caliber rifle round from long range? Congrats, the animal never saw it coming! Your supersonic lead blew its brains out from 300 yards with the flick of a finger. Man the fuck up and fight the animal 1v1. It’s got horns, and you have got a spear. It has brawn, and you have brains. Test your agility against its brute strength. Cut its heart out and eat it raw. Then I might be impressed.