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Not accurately enough for me to shoot any real distance. After triangulating my position and taking a bearing to the target I could use the contour lines to estimate the targets position.
What Am I...

A photo allways makes things look a lot further away(well mine do?)
190y

Im pretty crap at it also(guessing range) but people with range finders are generally better at it than people without.
I while back mate had the lamp(legaly) on some deer accros the paddock and up...