A good walnut stock is nice. It's the injection molded synthetics that are often marginal.
A friend bought a Vanguard 257 that was so equipped, and it was an indifferent shooter. It was transformed into a tack driver by bedding it into a McMillan.
Actually, I bet your freinds rifle improved more due to the change in barrel bedding than the basic stock itself.
I believe factory Weatherbys are set up with pressure points at the tip and many shoot better free floated.
Most modern injection molded Centerfire stocks are just fine for sporting stocks if bedded the same way one would a McMillain ,etc.