I'd tell him to use the Federal Premium 225gr TSX. I'd also consider the 210gr TSX if it was me.

I'm headed to Alaska in 2 weeks to hunt Grizzly, and will use either a 225gr Nolser, or the 185gr TSX. I don't have time to fiddle with the 210gr TSX. The Noslers are super accurate out of my 338 and a known quantity, but I'd like to try the 185gr TSX to see how they work. I'll be at the range Tuesday, I'm going up .5 grains over the load I usually use.