The two quickest kills I have on deer are with the .270 and .280. Both dropped stone dead and didn't even twitch. The small buck I shot with the .270 simply flipped over dead. He was was on his back with all 4 legs in the air, bent and the knees. Shot was about 40 yds.
The .280 kill was on a doe in a clear-cut, about 100 yds. She simply dropped at the shot. Never twitched. Just dead.
The .284 150BT is an impressive killer.
“Life is life and fun is fun, but it's all so quiet when the goldfish die.”
