GDay fellas, I have been doing a bit of research lately to rebarrel my .308 to a .284WIN and was talking to a guy here down under that can make a barrel for me in ANY length I want. I want a 28" for the .284 but later on I want to build either a .300RUM or .338 Lapua and was thinking what length barrel would you choose if there were no limitations? He can do any rifled calibre from .08 (I know!) to .458, any shotgun size and any length up to 120 inches. I know it sounds absurd but an old guy I know had a 1 bore shotgun years ago and this guy made him a 96" barrel for it. I also heard of this guy making a 52" barrel for a .17/22-243 Middelstead Wildcat that was spitting a 30gr projectile out at 5300fps! Don't worry about weight or ability to move it around, just what length would you have if you could have any length?