I am not much of a carver (yet) but have developed an inexpensive (free) system. I have soft wood blocks with thick leather glued to them. Using these between the vice jaws, (and another underneath to hold the correct elevation of the stock in the vice). I clamp the stock, with barrel installed, as someone said, snug. The forend rests on a 4 x 4 with a wood block screwed to it parallel to the barrel. for it to snug against. on the other side, is a wood block attached to the 4 X 4 with one large screw so it will pivot to self align to the forend. I use a softwood block (with leather glued to the face that touches the forend ) and a thin oak wedge to push between the block against the fore end and the block screwed to the 4 X 4s to safely hold the forend. This way each end of the stock is held securely with no damage. To work on the other side, I turn the rifle over and slide the wedge in, this time on the barrel side. It is slow, but as I said, it is cheap. If I need a different height, I just shim the whole works up a little. I am still unpacking and assembling my new shop, so you folks will not have to endure a photo of this Rube Goldberg set up. If so, it still wouldn't be as much of a shock as the photo of Keb in the clown suit holding a Hudson River fowler with a 6 ft. bbl.