When lying down while holding in your hands a crossbow with a holo sight attached, but not looking through the scope, you can see the orange range numbers from inside the sight projected onto the grass/floor/wall, but only if you look sort of downwards. The faint grey reticle you see all the time must be below a certain point, maybe 10 degrees lower than straight ahead.

I noticed it in the night time, probably much harder to see during the day. {F31776}