Zeroing Rifle with limited range

[BRUCE26]

I believe we discussed this before. Are you using open sights.

@BRUCE26

There were two practical reasons for being taught to shoot center mass.

1. the original sights on the M16A1&2 were sighted in at 25yds. and would would rise out to 175yds and drop back into 0 at 250yds. If you aimed center mass you could hit the target some where out to 300yds.
   After that you would have to aim higher.
2. Unless you are a stone cold killer in the heat of battle by aiming center mass or lower would keep most people from shooting over the target.
   Now some are teaching to shoot high chest for a heart shot.