The 300 Remington Ultra Magnum is like having five .30 Caliber Rifles in one.
( 308,. 30.06, 300 H&H,. 300 Win. and the 300 Wby )
And of course the 300 RUM which exceeds all of them.
Pass the .545 BC 88 ELD in a 22 Kreedmire at 3250fps from a 22" spout...and it's Velocity + Ballistics = Distance/Accuracy
Hint.
LAUGHING!...............