Royce, If you so much as think about taking a reamer to the barrel, I will hunt you down and hurt you!!!!!!!!
What you have on your hands is the bases for a hands down, long range varmint/target rifle.
To allow the barrel to really sing, you will need to hand-load for it. The barrel is short throated to allow the reloads/bullets to be seated to just kiss the rifling, and still allow the rounds to fit into the mag.
The chamber is tight to minimize blow-by of gases past the case at ignition, and will run with polished brass ammo.
By adding a adjustable gas tube, you can ever further direct the gas towards a consistent bullet speed, without losing unneeded pressure threw the gas port.
Welcome to the life of a shooting perfectionist!!! Here, were not looking for a wide range of ammo to shoot, just the single hand-load that will deliver the exact same POI, over and over again. The road is littered with down falls(loads that fall short, and powders that change FPS with the temperature),but once you get to OZ, You will have achieved euphoria.
Perfection is never achieved, but every so often you will get so close, that it will frighten you. Then something goes south, and you get to start it all over again. It's a viscus cycle, but well worth the journey.
P.S. If you still feel compelled to ream, I will swap you a 5.56 Wilson barrel for it. This way, you won't have to look back with hindsight, knowing that you have just made the barrel a MOA verses the Sub MOA that it was before the reamer.