Out of 100 shots at a head-sized target from 200-300 meters, I would miss zero (where a miss is anything significantly off the point of aim), and my guess is that the SEAL snipers are better than I am. At 25 meters, I'd again miss zero shots. No difference.
It is simply an absolute fact that the chances are improved at closer range than they are at a farther range. It’s so obvious and clear that no one need to even get into statistics and probability — because everyone knows this inherently...
If you don’t know this inherently, I’m afraid you’re “beyond help” for something like a Free Republic board... :-)
Even with your platform moving up and down and your targets platform moving up and down-maybe at a different rate than yours?