Hi, Dickie..you are not far off the mark , it is quite important to remove all copper fouling as the lands of the rifling can be damaged microscopically at this stage and that can affect accuracy eventually.If you are using FMJ this is especially relevant, obviously bore sighting will cut down ammo expenditure while breaking in and zeroing to at least get you on the paper, expect groups to widen when the barrel heats up it is your choice if you carry out this process with a moderator fitted , I wouldn,t as cleaning the barrel is difficult with it on and the barrel harmonics are different with a mod on , so rough zero to the paper mod off, then re-zero to the hunting ammo when the barrel is broken in and the mod fitted to achieve your field accuracy, as the Mean Point of Impact will be altered with the mod on...anyway it always works for me this way, hope that helps a bit..Tony