You guys dont know what you are talking about.
There are only 2 best gun choices for Warspite.Lvl 77 quads or Lvl 80 trips .
Both will bring you 200+ k attacks easily.If you want more range go with trips.
Only requirement is having lvl120 crew.
after a couple of runs here is my best so far and it been only a couple of days .
woot 300k atack!!!