They move first, you get an easy target. Learn your gun's range. Don't waste shots over 125 feet. You might get lucky with a long-range shot, but you can't depend on it. A good technique is to wait for them to come to you.
Some Hunters are true snipers.
They practice learning their maximum effective range under varying conditions and use a range card. This is a simple silhouette cut out the size of a person at maximum range. If a person fills the same size as the cut out in the hand held card, he is in range. Learn how to stalk. No, I' m not talking about harassing people by following them around.