Hi Montey , Are you using the Dragonfly ? Most IR's are fine to 250 yards but i tend to setup where i can see foxes coming in from distance and this can be 5-600 yards .... It's not about shooting them at this distance but clearly seeing them which my copy of the Dragonfly will do with the 15x .
A friend on here did mention about the batteries and i found certain makes will throw the light better .
Still hoping that someone has bought the upgrade from Clive Ward and can say what the thought on the difference It made .
OSOK