What pitting? That looks factory new to me. Of course, I'm used to looking at Russian MNs.
The rifling looks good too. Unfortunately, the pictures you display do not show the muzzle's rifling, which would be the most important (last force on the projectile). If it's as strong and clear as what the rest of the rifle is, it looks like a good rifle. Even if the muzzle is munged a little, you can easily get that dressed up either by yourself or a smith. If you just want a shooter, which it sounds like, dressing the muzzle shouldn't be an issue for you. However, some Fin MN purists will have just lost their breath with that last statement.
Enjoy! Your next assignment is to slug that barrel!