That's the $64,000 question...As I stated, it may be no more accurate...

Actually after posting I did remember that one nice thing about heavier barrels is that the weight makes them hold steadier...This can help, but who wants to lug around a heavy rifle when hunting...

As far as barrel harmonics, that can be adjusted to the load by reloading, adding a shim between the barrel and stock, even changing the tightness of the screws holding the action to the stock...