Thread:Oicraftian/@comment-12494172-20160412125401

Remember mates, the high penetration values? Well... Assuming you use: http://tankarchives.blogspot.ca/p/demarre-calculator.html

And input the 155mm L/60 Naval Gun and scale it to the 155mm L/77 Railgun... Well... APDS rounds actually do exist for railguns;

http://gizmo-teched.blogspot.ca/2011/04/railgun-round-punches-through-steel_17.html

and

https://www.reddit.com/r/AskEngineers/comments/341l8s/does_a_railgun_benefit_from_rifling/

So let us assume the 155mm L/77 fires a projectile with 43mm diameter that weighs 15 kg at 9,000 m/s. Versus the 15.5cm/60 3rd Year Naval Gun, 155mm diameter, 55.86 kg ammunition, 900 (?) m/s, the 155mm L/77 *should be* credited with 16,978mm

Well look at that... I really DID do the math! 