my push feed 6mm Rem is about 0.56" or 0.57". It was originally bedded by the factury with a pressure point between the barrel and the stock, at the tip of the forend. It would not shoot worth a hoot. Now, it has pillars and glass bedding, with the tube free floated all the way to the receiver. Wonderful job by Hill Country Rifles. Rifle shoots sub-MOA with prefered loads.