Originally Posted by
super_hunt54
Even using marked turrets can be off in those instances. If you don't have the math skills to compensate quickly for altitude, temperature, and air density (humidity) then shooting past 400 yards with most any rifle is ,pardon the pun, a shot in the dark.
Hence my adoption of the practice to re-run the ballistic table, then go test fire at range to confirm my come-ups whenever I have a significant environmental change - temp and density altitude gotta be accounted for.
Keep the DOPE (Data On Previous Engagement), then next time I'm in the same situation, or if I have cross-layering changes, I can rely on my books to get me on target.