I used a 210 grain Nosler Partition bullet in front of 75.0 grains of IMR4350 sparked by a CCI#250 primer in once-fired Winchester cases. This combination gave me 3020 fps out of my pre-'64 .338 Winchester Magnum Model 70 "Alaskan's" factory 26-inch barrel... a standard length for the Alaskan model.
The bullet hit the moose in the neck @ 125 yards, shattering a fist-sized vertabrae into small bone fragments, then turned and went down the neck into the off-side shoulder and stopped just under the skin on the off-side shoulder.
The shot produced a "bang/flop" one shot kill on a 1500 lb. Canadian moose, so it would undoubteedly do a good job on an elk.
The recovered bulllet "mushroomed" perfectly back to the bullet's famous "belt" and weighed 148.6 grains which means the Partition bulllet retained slightly over 70% of its initial weight.
This load is a MAXIMUM load, work up to it carefully.
Strength & Honor...
Ron T.