on my 223 I use MPBR with 77gr blackhills this is with a old leo 3x9 and it has worked well over the years. but I also verified the results and did not go with a program or balistics chart alone, as each gun has its own quirks the charts will get you on paper but best to see your guns results
my 243 75 gr v-max with a first focal plane Vortex and EBR2-Mrad reticle I use a 200 yard zero and use the ranging / holdover retical that cross hairs are in .5milard graduations, also used their long range balistic calculator on their web site and did the range validation. it gives me the true dope out to 700 yards, I was one click low @500 put the value into their program and it corrects the dope .
Phil
