Could not agree more. The MAIN advantage of the heavy barrel for National Match shooting is the extra weight of the barrel means it takes LESS time to get back on target in timed and rapid fire because the barrel is heavier and you don't get as much felt recoil.If you are going to carry it around for other things and occasionally shoot in service rifle, get the medium weight.
If you are going to shoot service rifle and occasionally haul it around, get the heavy weight.
Either way.....you're going to wind up getting another purpose build rifle later GI1