I see more and more rifles with bi-pods on them, and was wondering if they are worth it.
I'm of the opinion that they are not nearly as worth it, as most people who have them are their rifles seem to think. There are very few places where they are actually helpful/useful, in the grand scheme of things. They are actually a hindrance, not a help, if shooting from a benchrest. They are useless for any kind of stalk hunting in high rainfall areas with much flora (i.e. "in the woods"). They pretty well flat useless period in the woods. If the game is close enough to shoot, it is plenty close enough to see you go from the standing to the ground position and bolt. There's no time when stalking and no tolerance for extra movement. You see the game; you shoot - quickly. And if you're talking about ambush, then... If there are trees, there are weeds, bushes, and grasses, rendering a bipod all but useless.
Having said that, both Larry and Zak - the two people above who say they are practical above - mention or picture eastern Colo. - a dry open climate. THAT is the exception to the general rule, I believe - In dry climates with large open areas where long shots on game can be had, and there is minimal flora to interfere with your shot, then yes they can be useful.
So if you're building a pronghorn/goat/sheep rifle, then sure (or a long range practical rifle) - In that case, be sure to get one that will extend out to 12 or 13 inches or more. The little 6" -9" jobbers are pretty well worthless if the shortest little grass is in your way.
I have a bipod on exactly ONE rifle, and it's my (theoretical) Western pronghorn/goat/sheep rifle, in .25-'06 with a sporter weight barrel. Actually, I call it a multi-role rifle, since it's both a pronghorn rifle and a lightweight interdiction rifle of sorts. It's not *light* at all actually, compared to other hunters, but it's light compared to my other precision rifles. It's my jack-of-all-trades rifle, I suppose.
My two cents.
P.S. If you're French, you just take along a buddy - no need for a bipod: