Got an ongoing debate with a buddy who says I need to buy a new rifle prior to us going Elk hunting. I have the following calibers currently .270, 30-.06 and .308. From a bench every one shoots less than a 2 inch group at 200 yds. Here in the East I have never shot beyond 100yds when in the field, so I am sure with some work I can tighten the groups.

Looking for experienced opinions regarding what caliber you may have used and the damage your respective caliber did.