Nice video Marky.
Photon is fine for centrefire use up to 5000 Joules.
As for range, with the NM400IR we consistently use the Photon at 150m, although as Marky suggests you can spot further but the detail is not there compared to the likes of the Digisight at extended ranges.
Up to 100m the Photon is more than adequate and with a good quality illuminator such as the Nightmaster or one of Marky's you can extend this further out to 150, 200m safely.