Another, non-quick, fix is the set screw twixt the hanger and the barrel that assures both are in synch on vibrations post shot. It is adjustable with a tool through a small hole in the escutcheon and allows you 'tune' the rig to different bullets/loads. Six of my 36 #1s are so 'accurized' and it works.
I did that trick and it seems to work. I also glass bedded the forearm to the hanger at the screw attachment lug, free floated the rest of the forearm. That way, the barrel is in no bind, expect for the set screw tension.
This is on an older .220 Swift with med heavy factory bbl. Gun shoots around 1/2" groups.
DF
