Well, since no one has replied yet, I'll throw out a suggestion. I hope the moderators don't get on my case for suggesting this light whenever someone asks for: Police use, thrower, tactical, 1" body, etc...
The Sunlite Eagle 8w Far Projection may fit your need. Allow me to post a few pics.
From 250ft, it easily lights up your target.
And from 475 ft, you can still see it clearly.
I did a small review on it here:
https://www.candlepowerforums.com/threads/217294
It comes with a 5" and 10" pressure switch, sold separately.