I never got any answers so I broke down and bought a 940nm. I turned it on and has a real slight glow. The 840 has more glow. And this light worked out to over 300 yards. Don't know if it shines further because of a tree line. Still has that hint of glow though. Maybe its not true 940? No idea
Blessed are the peacemakers, for they will be called sons of God.