This seems underpowered for a plasma weapon. The MSRD version does 3d10. JazzMan 19:44, 26 March 2010 (UTC)
Considering a Pulse Rifle could disable or knock out an armored vehicle (in 40k, anything up to Armor 11) with a well placed shot. I'd place it somewhere along the lines of 3d10 or even 3d12.