In the JM6-DD: Butterfly I use the AC2s for suppressive fire and to strip armor until I can get within about 450m. Then I start in with the LBX10 and as we close to >=300 I switch from the AC2s to MLs. Anyone silly enough to focus a nearby mech gets their armor stripped before I close to crit out with the LBX10 and MGs. If the situation warrants it you can put out 17.19 dmg/s for a fast 150 dmg in less than 9 seconds without overheating, even on hot maps. * as a bonus you make decent CBills for the component destructions
A bit hot and in my opinion not enough AC2 ammo. This is my variant, I'll try it out shortly as I'm digging the JM6-S and want to continue mastering Jagers.