Target shooting for groups...I prefer using Mountain Plains Data Targets from Mountain Plain Industries; that I order from Sinclair International. They say the blue target color is more pleasing to the shooter's eye --- And I agree, since I don't like using red or orange colored targets.
Sinclair also sells a fine line of pedestal rests. I have a 12 pound pedestal rest from Hart Custom Rifles, while using a rear rabbit ear bag (bunny ears on rear bags are too small for my benchrest rifles).
I also use an F1 bipod for shooting prone.
I've filled my rear bag with #9 lead birdshot...which is illegal to use in some competitions.
You can also buy "heavy sand" for shooting bags from Hart Custom Rifles.
http://www.hartcustomrifles.com
It's easier to inflict a "scope eye" injury from a Lead Sled, if the shooter is not seated, and using a semi-squat while leaning over the rifle.
http://www.sinclairintl.com