Bad arse caliber but it has a good kick to it. I got the model 7 though and that probably explains it. I would get him one of 3 calibers all in a model 700: .243, .260. or 7mm 08.
The .243 has killed many a bean field buck and is a pleasure to shoot. Bullet placement is the key and the .243 will drop em easily at 300 yards if you know how to shoot.