I've seen worse on big-name barrels.
Yes, it will tend to foul, but probably no worse than a normal factory barrel from any of the big-name rifle makers (RemSavChester, etc).
This is the reason why the best custom barrels are lapped.
Once you start looking down bores with a borescope, you will be amazed at what you see. Furthermore, I've looked down some bores that look absolutely horrible... but shot quite accurately.