Gee Tard, I routinely hit targets at 600+ yards at night, no moon with my NV set up. I use a spotter and a partner technique to do it but I'm about 85% out to 800 in anything short of a raging rainstorm.
Hehe... simple always works best. Do yourself a favor, get one that isn't pen sized... you want a mountable one that you can put on a spotting scope or a tripod. it weighs a little bit but the advantage is instantly recognizable the moment you make the first score.
Good choice Aslan. The PVS-14 is a very good unit and it's upgradable. I have a couple of reworked and upgraded PVS-7's that are awesome but they are bulky. The PVS-14 is small and can be adapted to a great many tasks. It is also adaptable to use with hi-power optics.