After the gauss nerf and the increase of the ERPPC heat, i tried an other build and i find this one. The spirit of the former "LONG RANGE SUPPORT "build is the same (http://www.mechspecs.com/forum/index.php?topic=888.0) , just adapted to the new constraints.
st250 version here, because I'm c-bill poor atm and have ripped off a few good rounds with this build. Keeps most of its armor and adds a few options, altho it bumps it down to more of a medium to close range second line scrapper.
After trying gauss and ERLL, I've decided to try the more dps oriented AC10... Despite the new tech, there are no changes to the original build except armor (no shield arms) and bigger engine with 1xDHS