The .243 is available in 5 flavors!! 20" superlight, 22" standard contour, 22" bull, 22" stainless standard contour and 24" Ultra bull. Not sure which you want that you'd have to go stainless, but both the 22-250 and .243 are available both ways. Yes, you can have the barrels fitted to one frame, I have up to 3 barrels fitted to one frame and the forend is the same for all 3. As far as I know, all forends are the same for rifles, the bull barrels just have no taper to them, so the barrel at the forend is the same diameter for all configurations cept the superlight.......I think!!!
Tim