[Brian S]

let me guess... the grass where his body was found was wet and muddy, but his shoes had no mud on them...

Well...if you want to go there.

Why would a US ATT. use a shotgun when most all Texans own at least a 45 cal. pistol, especially a US Attorney, and why 75ft from the vehicle?

[WackyKat]

Why would a US ATT. use a shotgun when most all Texans own at least a 45 cal. pistol, especially a US Attorney, and why 75ft from the vehicle?

Because a shotgun will blow most of your head off. With a .45, there's at least a small chance you will survive, albeit brain-damaged.
Obviously, the guy was serious about suicide. I hope this won't turn into a conspiracy fest.