Re: I built a Rock River bull barrel gun recently.
I know a real gunsmith, Randy Ketchum, who does gunsmithing that I cannot. I have all the right equipment, but lack knowledge and skill.
I blew up the barrel on an old Ruger 44 mag carbine.
I took it and a new Marlin 444 lever barrel to him.
He milled and drilled a gas hole, and made the world's most accurate 44 mag semi auto for me.
I can re barrel Mausers, Rem700s, Savage 99s, Savage 110s, Win M70s, Arisakas, Ruger 10/22s, etc
I have ARs, FALs, and BARs to rebarrel, and someday I must learn to drill my own gas hole.