Farscape, blasters, and chakan oil

[RyanW]

Originally Posted by Kallatari

I couldn't find anything in the d20 rule set about changing the power of a given shot for a less damaging or more damaging attack.

If you want to allow it while also accounting for it never being seen, either make it require a non-trivial modification to the weapon (can't be done at the flick of a switch), or introduce some downside that discourages routine use. Perhaps the standard charge is at a subjective sweet spot between inefficient underpowered shots (damage drops off faster than linear) and risky overpowered shots (Malf worsens, and an 18 is a weapon explosion).