1200 feet per second at 40 yards is 1/10 of a second. A shot string of 10 feet at that velocity would mean the pellets in the back of the string get there 1/40 of a second after the ones in the front. Right? If thinking about how many pellets are going to hit a duck flying 40 mph (how far it will travel in 1/40 of a second)the pattern diameter at 40 yards or the number of pellets in the pattern seems more important. Then, for me, a duck going 40mph at 40 yards is the biggest issue. Check my math. I'm lousy at math.
