Sustained Fire Machineguns
 

Has anyone developed any rules for SFMGs? That is using tripod mounted machineguns, typically GPMGs, in the indirect fire role similar to light artillery?

YEP!

I use something similiar to mortars using my own shake and bake rules.

1 roll 1 D10 or 1D100 to determine the burst is on target, if not, it goes wherever my directional dice dictate.

Then the next roll is a roll per dice to hit.

I make it easy and almost required to use a T&E though.