I know I'll never get 1 MOA with my current barrel
Why not? I get MOA with a bone stock Remington 700 ADL, made in 1983 and it's still wearing its factory barrel. If the barrel isn't shot out, MOA is fairly easy to achieve.
Most factory rifles nowadays are easily capable of MOA shooting. That wasn't the case 30 years ago, but nowadays most of us take a 1-inch rifle as a basic requirement for bolt rifles.
Try the rifle before you take the barrel off. It may surprise you.