[Tomcat088]

Well, there are ALOT of different reticles that fit that description. There are true BDC reticles that are calibrated for a particular load, meaning it has a certain bullet (weight, bc, etc), moving a certain muzzle velocity, and then it will hit on the hashes. There are lots of other reticles like Tactical Milling Reticles, that people can make loads that hit at certain lines, or they know which line it hits at, at what distance. Either way, this isn't exactly what I'm asking man, that's not necessarily how a Tactical Milling Reticle, Mil dot Reticle, etc are supposed to be used. Even so, there are reticles that measure in milliradians, IPHY (inches per hundred yards), True MOA (minute of angle), etc. These are reticles that have evenly spaced lines, true BDC reticles do NOT have evenly spaced lines in the reticles. Either way, I need to know how the sight is calibrated in order to help the OP with using the ranging marks in the scope.