-just a reminder if use the prop as a brake on a 360 with the standard Hartzell prop.  320s don't have this restriction.

For HC-F2YR-1F/F7068-2 propeller on the 180 HP IO-360-B,E & F undampered engines, the following restrictions apply: 1. "Stabilized operation is prohibited above 25" manifold pressure between 2300-2500 RPM". 2. "Stabilized operation is prohibited below 15" manifold pressure above 2600 RPM".

Chris Zavatson