Pedal pressure in normal flight is not very heavy, as Blind says, 'If you can drive a manual car...etc'. However, a Puma with an autopilot hydraulics failure is something different, the pedal pressure is very heavy and it is required on a base check (OPC, VBC whatever you want to call it) that you demonstrate your ability to land the aircraft in this configuration. I would suggest that this is the pressure you should try an ascertain. Sadly I can't help you with that one as I don't know what value it is, but I would think it's very close to those that Helirider pointed you towards.
Hope this helps, I wish you all the best with your recovery.
Brom.