File:Damage Up Roller Range Chart.png

Formula
Max Effective Range (DU) = [base max effective range]*(1+(0.99*x-(0.09*x)^2)/200)

Base max effective range:
 * Dynamo Roller: 130
 * Splat Roller: 80
 * Carbon Roller: 60

Note: Roller damage is random. All values on the graph are approximate.