Ah adsi - yeah thread got a bit hijacked.
The best thing you can do is make yourself a target board.
aim for something about 3 feet square with a disc in the centre about 18 inches in diameter.
The simplest way to do this is to hammer a fairly sturdy post into the ground and attach a 3 foot square of strong cardboard to it.
Can also be attached to a wall/hedge/tree whatever
You want the top of the square to be about 6 feet off the ground.
Then make a disc (cardboard covered in plastic bags works well) and stick that in the middle of the sqaure.
That's a balearic target.
The other thing is to use consistent ammo. Either get hold of a bunch of golf balls or make yourself some mud/clay balls.
The on;y way to know that your accuracy is improving is tonuse the same target and consisten ammo.
Computer's not going to help much