Help turn Beam Weapons (Projector) into a Perk/Technique?

[Phantasm]

I've been going through things for my space opera setting, and I want to make one change:

Beam Weapons† (p.*B179)
The Projector specialty in the Basic Set does not exist in the Ventureverse (a Technique or Perk to cover cone attacks will be forthcoming in the future).

What kind of penalty should I apply to a pistol or rifle that produces a cone attack (for example, either a sonic weapon or a blaster shotgun, or for a more notable example a Star Trek split-beam phaser)? And would it best be bought off with a Perk or a Technique (probably an Average Technique)?