AMC - AMC slave damage change?

[Crashmaster]

Previously my WIP AMC - 99.8% support AMC slave system did 1602 damage per shot. I shot it again today for kicks and it is now doing over 40k damage per shot agreeing with the info in the weapons tab. There is approx. 36k blocks in 24 groups for both master and slave. No damage difference with or without the 100% punch-through effect (other then sudden critical debris lag after one click).
I'm not complaining but...