"Sniper Training" is a great website...

[Cruentus]

http://www.snipercountry.com/

Enjoy. I especially liked the training section. A good online crashcourse on "sniping;" particularly useful in understanding marksmanship, and if you are a hunter...

 

[KenpoTex]

Great site...I spent quite a bit of time on there years ago but had forgotten about it.
thanks for reminding me

If you want some more great info check here: http://demigodllc.com/

he's got a 3-part article about setting up a "long-range" rifle (scroll about 1/2 way down the page) and a bunch of other stuff.