06-18-2015, 11:57 PM
If you are into a bit of science behind the ballistics, I definitely recommend the full DVD series that this was taken from "Putting Rounds on Target". Also I agree with Brian's recommendation to actually measure the distance to the target using an old fashioned tape measure (I bought a 300 ft one sale for only $30) if you are going to try to determine the proper correction factor. One of the ranges where I prefer to do my OCW load work is 99' from the front of the bench on one end of the range and 97' on the other end of the row of benches, which is only 50 ' long. So the bench line is not parallel to the line of fixed holes in the ground which hold the target frames. I have a long range shooting class coming up and ironically need to go through these exact procedures to determine if my Vortex scopes are off.
My "6.5" = 24" AA Overwatch upper 1/9 twist, NC based US Tactical lower, standard A4 6 position stock, AR Gold Trigger, JPS SCS buffer, Vortex 6-24 x 50 FFP PST with EBR-2C MOA reticle