Used the 6mm-284 and a 100 grain Nosler Partition on a antelope. With the 70 gr NBT (IIRC,may have used the 55 gr NBT version) it worked very well on coyotes.
Ken the 55 BT' s are giant killers.... I won't call them "elephant" boolits like the lying bushelor, but they work.... grin
Ping pong balls for the win. Once you've wrestled everything else in life is easy. Dan Gable I keep my circle small, I’d rather have 4 quarters than 100 pennies.