How do I change the sentinel beam's ammo amount?

[Kewlkyle64]

Really the title says it all, but I used search and could not find it. Any help? I'm using Ch2r right now, and there's no .weap.

Edit: And how do I just change the ammo amount for a plasma weapon/make it so it can't overheat?

[ogrish]

Ok in ch2r open weapon tags, scroll down to projectile click O then change the heat per round and age per round.