so in a pinch this year on a new 308 I estimated the velocity to be 2800FPS, measured the height of the scope off the barrel to be about 1.5 inches, determined that I needed to be about 3/4 inches low at 25 yards, dialed it in at 25 and went hunting. First shots at 100 it were a bit high, I cannot remember but not more than 3 inches. I normaly never do this but it was raining the entire week before the weekend and I wanted to hunt with this rifle as it is my "rain gun". Maybe I got lucky. I did almost lose a rubber boot in the mud that weekend!
