Crossbows have an innate HardenedPointPenetration of 100%, meaning all their shots, will bypass hardened points (the damage reduction of -75% is reduced to 0%).
So using Metal Bolts (81-90) with Basic Crossbow (0% projectile damage increase)
- Normal: 81-90
- Hardpoint 81-90
- Extra Hard Point 81-90
With the Notch attachment, Crossbows do +25% damage if hitting a hardened point if the penetration is 100% (which in this case it is). This is the HardenedPointDamage stat coming into play.
Metal Bolts (81-90) with Basic Crossbow (0% projectile damage increase) with prototype Notch (+25% Projectile Damage, +25% HardPointDamage)
- Normal: 102 - 113
- Hardpoint 126 - 140
- Extra Hard Point 113 - 127