The NecroMech Dossier Core Manual April 2018 - Page 198
The Maximum Effective Range for any firearm (see Appendix 3 - Weapon Damage
Profiles) is the range at which the Base Success Chance% is Standard, i.e. 60%.
At other ranges, as with damage, modifiers do apply.
For each increment under Maximum Effective Range the Base Success Chance%
increases by one increment, i.e. Standard becomes Easy (80%) and then Simple (100%).
For each increment above Maximum Effective Range the converse is true and Base
Success Chance% decreases by one increment, i.e. Standard becomes Difficult (40%),
then Challenging (20%), and then Insurmountable (0%).
At ranges where damage is 0 this in indicative of the fact that the target cannot