I have owned a leica 1200 and I now upgraded to a 1600. The 1600 definately works to 1600 yards and beyond, I find if I give it a good 4 seconds paulse before I give it the second press to range something it works very well, the scan function sucks past 1300 yards. Others might disagree but a deer at 1300 plus better be wrapped in tin foil to get a read. I have ranged big furry cows and horses out to 1000, 1100 but thats about it.