You didnt say how old he was but I have both in 270 so I can give you some ideas. the X-bolt is a dream but light under 7 pound and depending on his age may kick a bit much, the M70 is aobut 1.5 # heavier, I love hte new model 70 but let me suggest depending on his age one of the savage rifles in 308, the stainless models are little over 7 points, accurate and a steal for the price, I also like the Marlin XL rifle, in 308 with a scope you unde$400 and they are tack drivers.