Ohhh just thinking about it just

Why not allow mech when he over heats the gauss barrel is shot at the target dealing damage and shatters into explosive fragments which have 10 stacks which explodes for 20% of the shot base damage,

so it acts like another wildfire but instead of trying to build up for a large explosive hit, it instead make each of ur shots deal explosive damage for 20% of the shot (clean ,slug,split only)