Rangercon;
I have been using a Nikon 3X9 40mm scope on my 25-06 for the past 15 years and I love that scope. Now for a little long range shooting infro. for that scope. I use 120 gr. Noslers loaded to 3,000 FPS and sight my rifle 3 inches high at 100 yards. On 9 power a muley buck's chest will fit inside the crosswire and the vertical post, where it goes from thick to thin wire, at 400 yards. Place the crosswire on the top of his back, and if his brisket touches the point where the thin vertical wire becomes thick, he is 400 yards away. If his body is larger then those two points, he is under 350 yards and you can use the normal crosswire for aim point, if his body is smaller then those two points, you know he is over 400-450 yards and should pass up the shot under most circumstances.
Now for the good part, where the thick vertical wire meets the thin vertical wire, below the crosswire, is dead on for your 400 yard shot. I have used this second aiming point for my 400 yard shots for one shot kills when I could not get any closer to the buck. This should work for rifles from 25-06 to 300 mag. when shooting a spire point bullet at or around 3,000 FPS.
RELH