Look Chief, just because you don't like to take the time to clean your barrel in-between shooting sessions doesn't mean that you monopolized some new way of firearm care. I kept my barrels clean before and during my 25 years in the military. My kid is in the garage cleaning the ones we just shot last week on vacation. Copper fouling builds up in them, powder (all powder) is corrosive in the bore and the throat/chamber of your firearm. Burnt powder, and unburnt, gets everywhere, lead and copper collects everywhere. It gets dirty and affects accuracy. Keep telling yourself it doesn't. You are probably shooting fouling rounds because the buildup is so bad in your barrel that you have no idea what a clean barrel is.
Just because you prescribe to letting your barrels get fucked up until you can't hold zero in no way makes that the correct or only way to do things. Personally, I don't care what you or the rest of this board does but to sit here and make statements like you and the other two make is ridiculous. "I have 10 matches coming up, I might clean the barrel after the 12th...whatever", "I know a custom gun builder, myself, and barrel break-in is a myth and waste of time. I shoot mine red hot out of the box and never clean them". "And I make guns.lol".
Why the fuck would you wait until accuracy degrades to clean your barrel? What if your life depended on making that shot, what if your kids life depended on you making that shot, what if 10K was on the line to connect to that target, what if the animal of your dreams is standing in front of you? "Well, looks like I am assed out because I hit my 600th round before cleaning, might as well throw this motherfucker in the jingweeds."
I don't give a shit, you take care of your barrels, you clean them, you put a protective coat of oil on them, you don't overheat them. They shoot like shit when they are hot, it damages the barrel and erodes steel faster. And I just decided I am not arguing with idiots on the internet so suck it.