Not sure how I missed your reply....in the definition provide, my answer stands. The .270 is not an "elk hammer"Not the OP, but how is this:
elk ham·mer
/elk ˈhamər/
noun
1. a weapon incorporating a metal tube from which bullets are propelled by explosive force that is capable of reliably hitting the vitals of wapiti with a bullet that will impact with the potential to transfer a minimum of 2,000ft-lbs of energy or with a bullet designed for use on CXP3-class game with the potential to transfer a minimum of 1,200 ft-lbs of energy and at a velocity 200fps over the bullet manufacturer's recommended minimum.