In the temporary duty scenario or eden editor enter a zpu quad 14.5mm or m56 quad .50 (including vehicle mounts), as the gunner, aim at the ground or at a nearby object and fire while observing the bullet impacts. Notice each time the weapon is fired projectiles alternate between hitting 4 points on the object/ground instead of all 4 at once while consuming 4 ammo. Either make all 4 barrels fire at once or adjust the ammunition consumption & effects to match the projectiles coming out of the gun - the former seems more appropriate considering the nature of the weapon systems.