I have a Remington 243 that has never been much of a shooter. I have 2 sons that have shot the gun, and we’ve all killed animals with it but it ain’t much of a shooter. My oldest son wants to rebarrel the 243 into a 6mm Creedmoor. I would love help from some of you more experienced guys. What barrel should I get? Can anybody point me in the right direction? I’d like a barrel to be threaded, fluted, and maybe a nut system like the savage to attach everything. Anyone help?