Thread: How do you judge range?

I use a rangefinder if I think it's above 200, my main selling technique for range finders is asking people how wide the shop is, 90% get it wrong, then we go outside to do a longer range trial, but remember knowing the distance is only the first problem, here is a target we just finished zeroing on it's a roe deer , shooting at 520, with 6.5-55 and then 243, we eventually hit the 4 inch disc every time, 20 mph crosswinds, and some amateur adjusting ( dealing the wrong way)