H600FW is a compact flooody headlamp for close-range use. It will do a good job illuminating everything in front of you, but won’t reach 250 meters away. It probably won’t even reach 50 meters away.

The BLFQ8 uses 4 cells so is much larger. It has enormously more output and throw and flood than the H600Fw, but isn’t nearly as compact or convenient to carry around. Its wall of light is much closer to what you request, though even it won’t reach 250 meters ANSI throw.

It sounds like you’re looking for a light able to illuminate a huge area at a distance. For that purpose, unfortunately the H600Fw probably is not what you need. It’s a great light, but only really suited to very close-range use.