I went the way of your buddy, my first cf rifle was my .300saum. Looking back I wouldn't change a thing. Eventually I would like to be able to take game at extended ranges, but I recognize my limits. The rifle is more than capable of doing that, my skills just aren't good enough yet.
I say let him get what he wants to get. Ultimately only he can decide to stick with it or go to something else. Above all else, practice practice practice!
