Originally Posted by
Failure2Stop
BZO: Battlesight Zero. This is a sight setting that permits a shooter in full combat gear to hit a man sized target (roughly top of head to knees) from 0 to 300 meters (without accounting for weather effect) while applying a center-mass point of aim. This is pretty much a 300 meter zero, though many will zero at 300 yards out of convenience.
For those of us that come from the armored realm (tanks, LAVs, Brads, etc), recall the "B" for "battlesight." In the LAR community, BZO or battlesight doesn't refer to a "zero," per se, but a specific range as attributed to a specific ammo at which one could put a specific pip of the reticle on an adversary vehicle and be able to anticipate some sort of strike, be it a catastrophic kill, a mobility kill, an annoyance, or something off of which you could note impacts and shift to achieve one of the previous three.
In this case, if I went through the specified procedure to attain a 1000m zero, I could hold the battlesight of the reticle at 6 o'clock of mass and expect hits from 0-1450m with APDS-T or 0-950m holding center-mass with HEI-T. See, the "zero" is the same, but the battlesight range varies; it's a general term, one of employment. Maybe call it more of a goal...?
Hunters, you may be more familiar with ballistic references to "point-blank range," which as I understand it, tells you that given X zero and Y desired impact zone (like, 3" on a groundhog), you can anticipate hits within that specified zone from 0-???? yards (ick!)/meters/furlongs/parsecs, or whatever increment your fevered brain decides is applicable to your desired endstate (a dead critter, I'm guessing). Guess what, guys, if you've been cognizant of your point-blank range, you've been employing a BZO.
BZO/point-blank range, by definition, will allow you to attain hits on a specified size of strike zone BEYOND your actual zero range. It's a performance envelope, but the term is mis-applied in regard to describing POA/POI at a given range/ammo/barrel/human sacrifice combo.
Last edited by JSantoro; 10-02-10 at 19:48.
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