I think the minimum question is tuffer to answer than one might think. I know of men who could grab onto a 243 caliber and bring home their elk. It kind of depends on the experience of the hunter and his or her marksmanship as well as skills in the high country.
I have hunted elk with a .270 caliber, 30-06, 300 H&H, 300 Win mag, 338/06, 338 Win mag and the 375 H&H. and by the way, been successful using all the above calibers. I have found that the type of bullet one uses is more important than the caliber of most hunters that are going elk hunting.
My favorite over the years in open country has been the 300 Win mag, but in the black timber the 338 mag rules. Any of the above calibers are 300 yard elk takers (if the hunter hits his mark in the vital area with a good bullet)and some you can stretch to 400 plus if you have a mind and the skill to hit the mark.
[ This Message was edited by: Quick-Sand on 2003-07-04 18:48 ]