The attached photos were taken through a Leica 1600-B rangefinder. The target was about 400 yards, but you will notice when it was centered in the middle of the reticle the distance read 317 yards. When the lower left corner was used to range the distance was the correct 401 yards. The reason is that when the target is centered the lower left corner of the reticle is actually focused on the grass much closer in. I have found that most of these rangefinders tend to range from the lower left corner, but not all. If you don’t test your rangefinder and practice with it you won’t know and you could easily miss a shot because of incorrect range estimation.
I actually prefer my rangefinder to range from that spot because it’s easier for me to focus on a very small target at longer distances rather than just trying to “eyeball” the exact center. After using it year after year and for thousands of rounds the Leica 1600-B has been very reliable and is my favorite rangefinder to use. I like it so much that I decided to become a dealer for them.
Check back often for other shooting tips and info on well tested equipment.