The scope on my Coyote gun has a BDC reticle for a specific load. I have been trying to reproduce this load by hand. Load: .223 with 55 grain bullets 3240 fps at the muzzle Powder: Hogdon varget Using the starting and max load data. I determined the ratio of FPS per grain of powder. This tells me i need somwhere in the niebhorhood of 26.1 to 26.3 grain of powder. I tried 26.1 first. Its on at 100 yards but 4" low at 200. I then tried 26.2. Its on (maybe slightly high) at 100 but its 5" high at 200. Should there 9" of difference in drop at 200 yards with .1 grain of powder difference?