Working with Special Operations Team next week, so will endevour to find out. I know 51 has range of about 600km, but 52 is significantly shorter. It also depends heavily on the configurations, payload and number of occupant.
Also by December this year the contract will be changing to Australia Helicopters, from CHC. This will see 3 helicopter being run from West Beach Airport. The line up will be a BK-117 (Primarily for Sapol), a EC-130 (Bigger than current 52 but smaller than 51) Primarily for Medivac (with rear barn door strectcher access), and I think a Bell 412, same as 51 for rescue role. I think all will be winch capable.