I've been using the BR2 for a few years now. My furthest, ever, shot was a first shot kill on a marmot at 1402 yards. I've used this rangefinder to take 6 marmots at over 3/4 mile now, and a bunch more between 600 and 1200 yards, not to mention too many prairie dogs to remember out to 962 yards, with 3 different rifles. This is an amazing piece of equipment.
I have also spent a good amount of time testing and fine tuning my ballistic inputs to get this kind of solutions from the unit.
Shot my furthest ever elk this year at 1098 yards after ranging him with the BR2.