I'm a little confused as to the 2e rules for railguns. The Kinetic Weapons Chart indicates railguns receive a x1.5 bonus to range and and X2 to Firing Modes.
What does the x2 to Firing Modes actually mean? Do railguns receive double the BF/AF bonuses, have double the ammo capacity, do double the listed damage and/or something else entirely?
Also, besides range, what are the advantages of a railgun sniper rifle? The sniper rifle already has the armor piercing benefit. Does the railgun sniper rifle ignore armor or reduce it further?