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Join Date: Jan 2010
Location: Southcentral PA
People should know the trajectory and POI of their bullets at any range they are willing to shot at game. If you know you will never take a shot at over 100 yards you will likely be fine zeroing at 25 or 50 or any distance between 25 and 100 yds. If you do a little research and spend a little time at the range, you can prepare both your rifle and yourself to make shots at somewhat longer ranges without giving up anything at close range. I figure I might as well be as prepared as possible.
I think there's some confusion about zeroing and sighting in. As I mentioned, the 25 yard zero often gives a pretty decent MPBR but that doesn't mean that you shouldn't shoot and confirm/adjust at longer ranges. For something like a 30-06 I could have a 25 yard near zero which will again be zeroed somewhere just shy of 250 yards. I'll likely never sight the rifle in at either of those ranges, though. Shooting at 100 and 200 yards allows me to confirm a trajectory. If I sight in so that I'm 2.5" high at 200 yards and can confirm that I'm around 2.75" high at 100 yards, then my 30-06 will be zeroed at 25 and 250 yds. If I then shoot at 300 it gives me an even better data point to confirm trajectory.
I'm not familiar with the 30-06 ammo used by the Rangers in Vietnam but it would take a very low sight height with something like M2 Ball to be much more than 3" low at 200 yards when using a 25 yard zero. Once you put a scope on, you will be high at 200 with the same 25 yard zero.