Have you tried shimming up front to simulate a pressure/suport pad & shooting it that way?
Yes I did.
I got my rifle, shot decent groups for factory ammo (1-1.25") and then thought about free floating. My mistake was that I should have just shimmed underneath the recoil lug to raise the action a little and float the barrel- a temporary "free floating". Then I could at least go back if it didn't work. For some reason I wasn't thinking too well and I went ahead and removed some material from the forearm support to free-float the barrel.
I did a real nice job and sealed up the wood again.... Went and shot the gun and my groups opened up to 4" or so. In disgust with myself I cut a 1" strip from an ammo carton, took apart the stock, and placed that back in the tip of the forearm. Tightened everything back up and the groups went right back down to around an inch.
In disgust with myself I cut a 1" strip from an ammo carton, took apart the stock, and placed that back in the tip of the forearm. Tightened everything back up and the groups went right back down to around an inch. 
