Improved Battle Zero – yet another question

Two more questions re the improved battle zero (IBZ):

1.  Given a fifty yard zero, what is the point of impact at 5, 10, 15, 20 and 25 yards?  I shoot USPSA/IPSC 3 gun matches where there’re lots of targets on a pistol-length stage at 3 – 25 yards.  

2.  What effect, if any, does using a AO Same Plane Aperture have on the use of the IBZ?

Thanks for your thoughts.

1. I would think at 25yds the POI would be half the distance (low) from your LOS to bore center,
and proportional at the other distances.

2. Not familiar with it.

[url]http://www.eskimo.com/~jbm/ballistics/traj_basic/traj_basic.html[/url]

Given you're shooting a 16" carbine with M193 under standard conditions at Sea Level:

5yd  -2.3
10yd -2.0
15yd -1.7
20yd -1.4
25yd -1.2



Not much really.  The only difference is you don't use the large aperture at the '3' setting - its used at the '3' -2 setting.

Thanks Forest.