Does anyone know where to find plans for a shooting bench??

Kck, go to the Black Power forum and look at Cayugad's.

Here you go.

http://www.larrywillis.com/shootingbench.html

Here's a plan for a permanent (non-portable) shooting bench. I'm getting ready to build a couple to take to my hunting club:

http://www.horstguns.com/ShootingBench.htm

Whatever plans you come up with be sure and use just 3 legs, 2 in front and 1 in the rear,doing so it will sit firmly on uneven ground without rocking on you.