Still don't get it. "linear" as taken from Google
If that's correct than that means accuracy, penetration etc stats change after they cross their thresholds.
If that is actually NOT what is intended, than I believe the word meaning here is "dynamic".
If the penetration value goes 50% between mid and far when you're 50% between mid and far ranges, that is dynamic. If it remains at far till your cross the mid threshold, I'd say that is sequential.
Linear as an linear equation Y=a*X
Examples puma has:
Penetration near 160
Penetration mid 120
Penetration far 80
Accuracy near 0.05
Accuracy mid 0.0375
Accuracy far 0.025
Range near 10
Range mid 30
Range far 50
Thus if a puma is firing at range 40 it would have 0.03125 accuracy and 100 penetration.
If the target was T-34/76 it would have around 69% chance to score a "natural" hit and if it scored a hit a 67% chance to penetrate lowering the chance to cause damage (hit and penetrate) to 46% which is not that great.