The 30/06 will do you very well on any elk. My dad killed his elk every year with a handloaded 270 win 130gr sierra; I was with him on many kills on running shots. That 270 win slapped them down hard. My friend in WA used a win 94 32 cal and shot a rosey this season 1 shot in the heart. My favorite elk rifle is the 280 rem with 140 gr barnes or hornady bullets. I have used the 30/06, 338 win and 340 wby with sucess also. I use the 280 for back pack hunts, its a fwt. Its all about bullet placement and of course you must know your limitations.