Myself and 2 other guys are going to Idaho in 4 months for an elk hunt. We were talking ammo selection the other day and my buddy needs to find a good factory round for the 7mm Rem Mag he just inherited. So what brand and grain weight would you guys recommend? He will not be reloading for this rifle. He's a pretty avid shooter, but not necessarily long range. Keep in mind this is a brand new rifle for him so I'm thinking realistically shots out to 400-500 yards will be his max.