If you are a long range shooter or hunter then you may benefit from a ballistic rangefinder. A ballistic rangefinder will calculate the distance, measure the air pressure, temperature and shot angle in order to provide you with a shooting solution. The G7 BR2 rangefinder is one of the most advanced rangefinder on the market. It can provide a shooting solution up to 2,000 yards.
Rangefinders are the most accurate way of determining the distance of a target. In order to hit the target you must calculate how much holdover in order to compensate for bullet drop and drift. If it is windy, it makes it even more challenging to make distant hits. A ballistic rangefinder will give you the exact holdover and drift or shooting solution. There is no guesswork on your part and you can make your shot count.
Here is a video on the G7 BR2 Ballistic Rangefinder. It is a brilliant piece of equipment.