Well i cant tell you about how they play since i Havent played them a lot after the RM Patch. If you want to know how to set them up here you go:
Armor for all RM BBs:
0.2Belt
As much Bulge as you can fit without losing speed
AA:
better get HHs
Saw someone performing good with the 1x 5.9" SK L/45 guns on Aquila. But for single guns they are rather big and can be only mounted on Caio Dullio(1915) and Caracciolo.
Caio Dullio(1915)
Gun:
-3x 12" K10+ 2x 12" K10
Speed: 42-44 i think
Comments:
Nasty little Ship that can easyly rips any ship into pieces as soon as in range. Furthermore for its firepower is a very fast one.
Cante Di Cavour(1915)
Gun:
-3x 12" K10+ 2x 12" K10
Speed: 42-44 i think
Comments:
Not as small as the Caio Dulio(1915) but same firepower and equal speed.
Caracciolo
Gun:
-2x 14.5"
-3x 12" K10
Speed: 42 (unsure)
Comments:
It has 7 supportslots which makes it a really nice Ship to grind your crew. When mounted the 2x 14.5" Guns play it like a bismarck. You got a tiny bit less range but better firepower.
I cant really recommend the 3x 12" K10 guns on the Caraccilo but i see many driving with them. Maybe its just not my playstyle.
Caio Dullio(1915)
Gun:
3x 12.6"+2x 12.6"
Speed: 40
Rather slow for a BB4 and medicore range but fair stopping power and easy angels. For Rm this is more a line fighter.
Cante Di Cavour(1915)
Gun:
3x 12.6"+2x 12.6"
Speed: 40
Rather slow for a BB4 and medicore range but fair stopping power and easy angels. For Rm this is more a line fighter.
Vittorio Venetto
Gun:
3x 15"
Speed: 40
Comments:
This ship wants to go fast and wants to rush. Good range, good reload, fair damage, 30 degrees, fast , small. Only the spread is a bit annoying sometimes.
Progetto UP41
Gun:
3x 16"
Speed: 39
Comments:
This ship is big, really big. Only Kaiser has a bigger hitbox. The speed is average and turning force is a bit below average. The spread would be awesome if there wouldnt be those nasty rangejumps. It jumps between QV and Nebby range which can be really troublesome in a linefight with other BB6s. The Damage is average for a BB6. It about 55k i think. Its not a bad ship, but it really requieres skill to be competetive in a linefight. You will have to try everything to make your lower hangtime count against enemies like Nebbys and Kaisers (in a linefight of course. in a 1v1 situation you can easyly rush most bb6s.