Zero vs. effective pointing range

Zero can be set to the distance you shoot your game at normally, however since most game is shot fairly close up (or at least you can't eliminate the ability of a close shot) you should always know where it's hitting up close.

  Because of this I like knowing the range in which I can hold the cross hair on my aim point and still hit the kill zone (3 to 5" circle).  Since like a idiot I forgot what that region is called I didn't put it in the subject, what I meant by the subject was the range in which you can hold the cross hairs dead on and kill with confidence.  Anyway, I try to pick a zero that will ensure I'm in the kill zone all the way out to my target, and I will accept a zero that's off for my "desired" zero of about 2" and no more. 

  I choose my zero's kind of goofy, but I thought it were use to talkin' 'bout.  Even after i've finally choose my zero point, I shoot at each range to verify the impact points instead of rely'n on the charts.  Nothin' beats confidence in the rifle, except maybe flinchin' when yer pullin the trigger. 

Spot