I’m using the built in Pioneer Receiver device. When I have it at a normal listening volume, it’s showing 115% for the .Volume capability.
There currently isn’t any volume scaling applied to devices using the ISCP protocol. My Onkyo is already in a 0-100 range so I had assumed most receivers used the same. I do believe that they have some min & max volume settings I can look at to scale it to a normal 0-100 value for you.
Just out of curiosity, what is the entire volume range for your Pioneer? Is it 0-150?
The Home Remote shows 0-200%