Might be a worse version of the Leman-Russ already posted but I've been doing great with it. I've struggled to find a BW build that fits my playstyle and I think this is it. Very much a glass cannon but it is really devastating in a fire support role. Make sure you spend the GXP and 3mil on the AC/5 Cooldown mod.
Rule of thumb 2 tons of ammo per AC5. I have squeezed by with half a ton less on the back side with 4x AC5s.
Yep, seems like I can't do 4xAC/5 and 4xML without ammo issues, xl255 is the lightest I can go without running into heatsink requirements, so I dumped an AC/5 and added more armor, more engine, and a SRM6+A. Maybe it's workable? I'll have to try later tonight.