Well I don't take running shots at big game, but do take cracks at coyotes on the run. Not to hard to hit them close, but whenever they are at a distance it's tough. So I made myself a little chart on how far a coyote travels from when the bullet leaves the barrel to when it hits. I assume a coyote can run at 45 mph (as I read in a few places) at max speed. To make it simpler I said a coyote can run 20 m/s. It's for a .243 with a 70 grainer leaving the barrel at about 3450 FPS. Did I make any mistakes?
Yards/Average FPS/Time of bullet flight in sec/lead distance in M
100/3300/0.091s/1.82m
200/3150/0.190s/3.8m
300/3000/0.300s/6.0m
400/2850/0.421s/8.42m
500/2700/0.555s/11.1m
After doing this I realize I haven't been leading enough. I've always tried leading about a meter or two at 200-300 yards. Guess I've been missing behind them.
Yards/Average FPS/Time of bullet flight in sec/lead distance in M
100/3300/0.091s/1.82m
200/3150/0.190s/3.8m
300/3000/0.300s/6.0m
400/2850/0.421s/8.42m
500/2700/0.555s/11.1m
After doing this I realize I haven't been leading enough. I've always tried leading about a meter or two at 200-300 yards. Guess I've been missing behind them.