I was able to cram 19 DHS (the most possible with these weapons) with two ER PPCs and an XL 340. I can fire three times consecutively without overheating. I'm not 100% positive I could if I just held the trigger down, but I know I can fire three times consecutively in the normal course of battle.
You can also bring just as many heat sinks with 6 medium pulse lasers and XL 350 -- that is a lot of fun when it works. It usually doesn't, though, because that massive CT coupled with the nerfed twist range quirk (90 degrees rather than 120) means you can't spread damage. It also seems a shame to let those high-perched sniper arms go to waste.
I tried 6 medium lasers and ran out of space before running out of weight. It's a little disconcerting having the same alpha as a JR7-F, but at least all the extra heat sinks make for more sustainable damage.
What it comes down to, though, is that it doesn't have the durability to do anything but snipe, and for that you have either PPCs or LLs. PPCs weigh too much for you to bring both the heat sinks you need and secondary weapons, so that leaves you with LL. And that's why 2 LL + 4 ML is the only build you see.
Edited by Felio, 23 April 2014 - 03:30 PM.