I tried the thing with splitting a bullet on an axe head with a .22 pistol. Let's just say it looked a lot easier than it actually was. I never pulled it off after 3-4 attempts.
Since other people went in this direction; I once shot a squirrel with a .22 rifle that was running full speed up a gravel road. I was never able to decide for sure if I actually hit the squirrel or I hit gravel and "barked it". It was a very impressive shot if I actually hit it and my friends were awe struck until we started thinking about it a little bit.
You know the rest. In the books you have read
How the British Regulars fired and fled,
How the farmers gave them ball for ball,
From behind each fence and farmyard wall,
Chasing the redcoats down the lane,
Then crossing the fields to emerge again
Under the trees at the turn of the road,
And only pausing to fire and load.