It is possible to get above that range. It is rng at work and you got to get lucky; I playtested it and was able to get above that range here and there, not consistent, yet still possible.
If it's entirely reliant on RNG, then sorry to say that, but it's pretty dumb. You could just roll a dice and it would have the same effect. If the player doesn't have a minimum of controls, it's just frustrating
