I’ve managed to squeeze in a 2km/s railgun into the Caliburn, allowing it to punch holes in opponents long before they can bring their guns to bear on it. (A heavier model is also available, though it should be noted that shield piercing does drop off noticeably. Edit – Fixed this issue by tweaking the shell design a bit).
The railgun fires every two seconds, and the projectiles themselves deal 1750 damage with an AP value of 107. This is sufficient to pierce even the strength 10 20* shields on my Andúril more often than not, and given a little tweaking the damage per shot can be significantly increased at the cost of either AP or RoF.
-45* from enemy location
– 344596 RP