This question may sound stupid at the first glance, but I wonder what impact this number has. If you have a pistol with a range of 60, will VATS only activate if there are enemies within that range? And what happens if you shoot at someone to far away? Does the bullet begin to sink (would be a weird type of ballistic) or does it simply vanish?
All I can say is that there wasn't a single enemy until now that I couldn't hit even over the biggest distances, if it wasn't for the accuracy.