I would suggest Magnus Stinger 2 blades for the 40# draw, or the Rocky Mountain Tradition. Both should be very good heads for a young guy. I would prefer the Magnus stingers though. Better angle on the blades = more penetration, and that is what a young archer needs. You have to start him with a head that will do a good job, a wounded or lost deer hit by the young guy would scar his hunting career for a long time!

I use the Magnus Stinger 4 blades and man o' man what a great head, you won't be disappointed with the Stinger 2 blade,

Good luck to you and your boy,

Jason Holtz