Rifle Rest? Do\'s and Don\'ts? I am in the market for a rifle rest to use mainly to zero my rifles and maybe some medium range groundhog shooting. Can someone guide me in the right direction. What effects do the type rests that have a strap that supports the rifle between the butt-plate and your shoulder have on accuracy when the rest is not used? I am not talking about the type that straps the rifle down, but the kind that helps the rest absorb recoil. I guess what I need is the "Do's and Don'ts" OF RIFLE RESTS! Thanks!