FT-Need help on a new weapon thought

I am after designing a new weapon (for use in a personal universe), but 
require a bit of help balancing it with other weapons. The weapon is a
short 
ranged, high powered beam weapon. I already have the C mode pulsars, and
am 
after something with the same range, but more penitration and dammage.

I am thinking of using a MKP, with every level of screens reducing it`s 
power by 1 level/class, with a 6 using rerolls (as per normal beams),
and 
having the same PDS as a Class 1 beam bat. The problem I have is
deciding a 
sutable mass/cost for such a weapon. My first thought is for a mass of
3, a 
cost of 15, with 4 points of dammage (before screens and reroll).

Anybody help?

BIF

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