So, finally i think i understand the calculation of effective wpf.
I just want to know, if i get it right.
Example:
My Crossbow-Alt has 150 wpf in crossbow.
His Armor:
Head: 0,6*3 = 1,8
Hand: 0,3*2 = 0,6
Body: 9,4
Leg: 0,6
Total armor weight is 12,4. Effective armor weight is 12,4 - 7 = 5,4.
So my 150 wpf get reduced by 5,4% (5,4% of 150 are 8) and my effective wpf is 142.
Please tell me that this is correct