Worth the money? - Nikon LaserForce 10x42mm Rangefinding Binoculars

I have wanted a rangefinding binocular for ever it seams, but just couldn't justify the cost. These are priced right (for me) and well worth the money I think. The optics are a good as any I have tried that are near this price range. However the rangefinding fell short of the advertised distances for me. I was able to come close to the 1900 yards on a new stainless steel milk trailer 1881yds. On pine trees 1550. Not so great on deer sized Elk - 625. Full sized Elk cow - 850. Horse W/rider - 885. Animals are advertised at 1100? For all the above results
I approached from a far piece stopping every 50yds and ranging till I got consistent readings.

I'm a little disappointed in the rangefinding on animals. I'm keeping mine but I'm asking Nikon about my reading.