How Adjustable is the Power Wheel on the Western Rattler 45 Long Strike?

Today we are finishing off with the Western Rattler 45 Long Strike.
The regulator is set to 170 bar and we will adjust the power both up and down on the Rattler to see how much room there really is in there.

We are using Griffin 200 grain Flat base hollow point slugs.
My ProChrono might have glitched out really badly, so the velocity readings
are mostly done using the FX chronograph instead

Thank you to the owner of this Rattler 45 for sending it out!