If the guy want's a .300 mag. he should get one, regardless of "need". If you talk him into something else and he's not successful, he'll blame it on not getting what he wanted. If he gets a .300 mag. and has problems, it's just part of the learning curve we all go through. Who knows, someday he may think he "needs" a custom pre 64 M70 in .280AI Rem. with a 23" barrel in a McMillan stock, and everyone here will tell him what a good idea it is.
