I think a plugin request is in order. =D
Edit: The hooker extention's HK_OnTakeDamage does not work, as stated so in it's thread.
Is there any way other than a plugin to change how much damage is done when its a critical hit for the sniper rifle?
I tried editing sniperrifle.ctx and changed the 'damage' from 4 to 1 but that had no effect at all.