We used to free float barrels to keep the effect of the wood stock swelling from changing the point of impact, not the size of the group...

Since your rifle has a synthetic stock, you will actually probably hurt the accuracy...

I have improved accuracy on some rifles with pressure points...Simply take a 12 gauge fired shotgun shell, cut a 3/4 inch section out of it, cut in half, so you have a half moon...Loosen up the screws holding the barrel to the stock and slide this adjustable pressure point between the stock and barrel...