Some weapons have a "Base Damage" property listed that has a significantly different number from the "Damage" number listed for the ammunition.

For example: the "Positron Blaster Cannon (Heavy)" shows a Base Damage of 800 Hit Points, but the ammo for that weapon is "Positron Accumulator" that shows 15,000 Damage.

I've read that "The average damage per minute (DPM) and CPU cost of all weapons within a tier is normalized" but also "There are some exceptions to this for more unique weapons."

So... how can we go about figuring out the DPM for various weapons? If we're trying to calculate DPM which value is the one to use, do we calculate using Weapon "Base Damage" or Ammunition "Damage"?