Re: freefloating worth it?
All 10/22 barrels droop. It's the nature of the V-block mounting system.
A variety of solutions are available, from a set screw on the V-block to compensate, threaded in barrels, Burris Zee rings with offset inserts, sloping rails.
I haven't built more than about ten, with shortened stock barrels, aftermarket tapers in a variety of lengths, and .920s from Clark (Douglas and Walther), KID, and Volquartsen.
I've not yet seen a bent receiver, despite the "tremendous stress" a free floated bull barrel (sometimes with up to a pound of additional muzzle weight)confers. One of these with the extra weight (not my build) still runs well with between 500K and 750K rounds since he got it WELL USED 20+ years ago.
Regarding bolt guns, which I see was the OP's area of interest, for free recoil on bags I know nothing. Bipod, or slung up, PG and fore end pressure will move POI around. It's probably less important for standing, but My Krico silhouette gun and 10/22 race guns are all floated.
Hangingchads has the right idea.