I have killed elk with 7mm-08, 308, 30-06, 338WM, 375HH even a few with a.54cal muzzleloader. If I was to go now, it would be either the 7mm-08 or 338Fed. I do not take shots longer than 300yards. I prefer sneaking through the timber and rarely watch meadows. Those two are great deer cartridges as well!