QUOTE (forgarn @ Aug 9 2013, 09:56 PM)

Suppressive fire takes a complex action and uses twenty rounds. Also stated on pg 179:
So I would say that with the fact that the fastest a BF weapon can fire is 3 rnds, and it is a simple action, and the description states fully automatic, it all requires an FA weapon to use suppressive fire.
By your logic, even FA weapons couldn't handle suppressive fire, since "normally" they can only fire 10 bullets. I'd say that all weapons can throw downrange 2x the bullets you can normally fire when using aimed fire.
So, SA weapons can fire 6 bullets, BF weapons can fire 12 bullets, FA weapons can fire 20. Use these figures and the "not enough bullets" rule.
"A character can suppress a triangular area projecting from the shooting character outward up to a distance of his choosing, up to the maximum range of the weapon, with a width of 10 meters at its end and a height of 2 meters."-pg 179
"If an attempt at Suppressive Fire doesn’t have enough bullets, the width of the suppressed area is reduced by 1 meter for every 2 bullets the attack is short."
A BF weapon could suppress an area 10-(20-12=

/2=6 meters wide, using 12 bullets, taking a complex action.
A SA weapon could suppress an area 10-(20-6=14)/2=3 meters wide, using 6 bullets, taking a complex action.
The nice thing about this formula is that it works for fast firing weapons too... like miniguns, throwing 15 bullets downrange in a full auto burst, or 30 if we use my 2x max bullets figure:
A MG weapon could suppress an area 10-(20-30)/2=15 meters wide, using 30 bullets, taking a complex action.