Quote MD:
Whats crazy, I had it sighted dead on at 75 yards for the hog hunt and when I went to 100 yards, It was easily a foot low. That 25 yards really made a difference.
Quote Semisane:That doesn't even seem possible.
Quote MD: It doesn't but it happened!
Something else had to be going on. It's just not ballistically possible with the load you were shooting. The only way a .490 ball can be dead on at 75 yards and 12" low at 100 yards is if the muzzle velocity is something like 750 fps.