Here's a website that may have some interest for you folks needing to sight in that rifle that won't puff a tree rat or to pattern that shot shooter that won't whiff a dove. I think it will come in right handy:
http://www.mytargets.com/

I'll have to bookmark that one.
I have on for pistol shooting that tells you what you are doign wrong, I'll see if I can get it up in the next few days.