I dont' think the bipod or bench has anything to do with being a good shooter. It doesn't make one a good shooter or a bad one-- it is a tool, as has been stated.
Now, I can say to a person that shoots a 1/2 MOA group from a bench "Hey, nice shooting" or "That was a nice shot." I wouldn't be able to say he is a good "shooter," however.
How does he do without the bench or bipod? If he shoots decently in those conditions and others, as well-- sure, he is a good shooter. I'd look for a consistency of shooting over essentially any condition he may be faced with before I consider someone a good shooter. Otherwise, it is a good shot.
It sounds nitpicky, but I'm not trying to be. Frankly, I couldn't care less on the issue. I am justing thinking about how the people I've grown up with has always viewed it.
It you have to shoot something, and you take the shot in whatever situation you find yourself in-- and it hits where you need it to, you're probably a good shooter.
If it requires you to find a bench, a lead sled, appropriate sand bags, a spotting scope, and such to hit that same target, I would be less inclined to call you a good "shooter."
I guess what I am saying is versitility with the rifle. Sure, I bench shoot when I want a percision shoot. I bench when I am sighting in. Its accepted that you SHOULD be a better shot when you have all the proper support and advantages. I'd definately know that you are a BAD shooter if you didn't do better.
Now, of course I understand that there are competition shooters who ONLY bench shoot rifles. I'd judge them according to their sport. However, I consider versatility as a component to being a "good" shooter. If they are an excellent bench shooter and a decent versatile shooter, I'd say they were a good shooter. If they couldn't hit the side of a barn without the bench, maybe not.
But then, I look to the practical as my guage of measurement.
This isn't an attack on bench shooters or people who shoot from a bench exclusively. Its just the way I see it. And its something that probably doesn't matter anyway-- unless someone has a NEED that I see it otherwise.
-- John