BDC Reticle
I'm looking at buying a new scope to go along with mynew .30-06, and have came across BDC reticles. I don't understand how they work fully. I understand that you sight them in at 100 yrds and it is supposed to have circles to out to say 500yrds. This is where I am confused on their functioning. Are they just generalizing the amount bullets of different calibers, weights, and charges will drop? I am pretty sure I'm going to get a Nikon Buckmaster scope. They offer a BDC and nikoplex reticle and am uncertain about the BDC. Any info is appreciated.