I would like to make the Pump Shotgun deal 200 (maximum) damage when headshotting players without changing the base damage of the weapon (i.e. still does 128 bodyshot damage) or player health. Is there a way to do this in UEFN/1.0?
You could try calculating the damage done per second to a player from a specific player using verse, then if it meets a criteria (eg 199 dmg) you deal an extra 1 dmg via code to finish them off.