We want your HALO 3 screenshots here. Add yours.
The Hushed Casket was founded in 2002 shortly after the launch of the XBOX console. Today the Hushed Casket is a thriving community of gamers, playing together and publishing news and stories that have appeared in major media properties like Newsweek, G4TV, USA Today, and Penny Arcade. Some game developers have even referenced our guides and news to support their gamers. We don't play Halo. We LAN Halo.

Get notified of game nights and important THX announcements via the hushedcasket Twitter account. You can get the messages on your cell phone, through email, Facebook, and many other ways. Here's how it goes down.
Slayer is right. I
Slayer is right. I mis-typed. The overall concept related to this is that you want the rifle supported by things that don't move: a tree, sandbag, shooting bench, or in the case of your own body (no structure available)...bones. You don't want the rifle supported by muscles and air (air in your lungs). Muscle tires and inflated lungs are...well...not nearly as solid as bone.
I've never read Mr. Cooper's book, but I know he's a renowned author on the subject.
You also should memorize the 4 cardinal rules of firearm safety if you haven't already. Happy shooting.