Hello, I have been trying my new leica rangefinder. Yesterday, I had the opportunity to range some deer at around 600 yards. However, I was having trouble ranging the deer because the reticle was larger than the deer. I have read that some people use only a certain portion of the reticle to range small objects. So my question is, which portion of the reticle should I focus on when ranging deer? Should I place the deer in the center of the reticle? Should I use the top bar of the reticle to range it or should i use the lower bar of the reticle? Any help is much appreciated.