I have the IOR Valdada M2 scope with the Dragunov reticle. We had a lengthly discussion about this reticle in a prior posting (see [url]http://www.ar15.com/forums/topic.html?b=3&f=18&t=159450[/url]).
The Dragunov reticle was originally designed for the 762 round, which fragments at longer distances than the 223. The lower chevrons were the aiming points once you had exceeded the range of the scope using the bullet drop compensator (BDC).
On the IOR Valdada the max BDC range is 800 yards. Since the fragmentation of the 223 round makes shots of this length highly questionable, these aiming points are relatively useless using 223.
If you want to use them without cranking up the BDC, I measured the distance between the chevrons using a high resolution digital camera as: 2.5, 3.0, and 3.2 MILS apart (length between the tops of each two chevrons as you go down).
Check out [url]http://home.insightbb.com/~karlknapp2/DragunovOverview.pdf[/url] for my summary of this reticle (using the IOR Valdada scope).
Karl