Fred, What are you defining as a "good" rifle bbl? I know a lot of guys that use shilen, douglas and various other high quality competition bbls and they still will throw the first shot off out of an immaculate bore. It may not be 1" but the first group will definatly not be in the .4's... Fred, isn't it the US army that promotes not using lubricant on the bolts of their m16's?
If you pay close attention to your rilfe, it does not take long for the copper to build up in the rifling at all. Sometimes 10 rounds, sometimes 20. Powder foulding doesn't do much harm at all unless your powder is just excessivly dirty...
"To all you dirty bore lovers ----Hopes on ya!"
Wow... what an intellegent addition to this conversation... 
A good rifle barrel is not one that is 0.00175" larger at the muzzle than at the chamber end. It is not one with a rough bore. It is not one that has been straightened and not stress relieved.
I have been fortunate to affort good custom barrels, and I never had one that would place the first shot out of a cleaned bore 4"
from the group.
For me copper fouling is a non issue, since I break in a barrel with Moly plated bullets and use Moly plated bulletd for all shooting applications.
The barrel I talked about above was brand new, match grade and broken in. During the process of chronographing I fired 26 rounds with 140gr bullets. After I got home I gave the barrel a quick clean with Kroil and inspected the bore with my Hawkeye bore scope to see if there was any copper fouling, non was dedected.
Some new barrels will sometimes deposit copper near the muzzle and need some JB rubbing a few times to get rid of it. After that it
it is clear sailing with Moly bullets. Some new factory barrels copper foul so bad you have to be very aggressive to get the bore clean. Not my forte.
During gopher hunting I have fired as many as 100 rounds with no copper fouling and no cleaning using Moly plated bullets.
We never talked about the rifle bolts on auto rifles yes they should only be dry lubricated same as auto shotguns.
Last post for a while, I am going Salmon fishing for two weeks