RE: Long Range Elk Gun
I feel FT lbs Momentum are a more accurate measure of overall terminal performance than KE. I feel this especially true on larger game like elk. Whencomparing the 270 WSM to the 338 WM based on the FT/LBS Momentum a very different picture develops. I will also compare relatively close BC bullets which was not done in the 270 WSM/338 WM comparison
500Yards Momentum KE Drop Wind Drift
338 WM 225 Grain Accubond65.22055 42.616.6
270WSM 150 Grain Nosler Partition45.961532 36 17.4
Thats a 41% edge in ft/lbs Momentum for the 338.The WSMhas an edge in drop but not terminal performance.
Keep in mind that the vast majority of elk are killed above 7000 ft elevation. That means it is much harder for the WSM to close the initial KE gap of 700 LBS KE that the 338 has over the 270 in most real hunting situations.