Another thing Dan Lilja (and some other barrel makers) suggest is not getting barrels too damn clean. Again through experimentation, Dan believes leaving a little something inside the bore helps accuracy, especially a slight amount of powder fouling.
I quit cleaning barrels as hard or as often years ago, because of my own experiments. A good barrel really doesn't need much cleaning to stay accurate--and if it does, I install DBC, which solves the problem. (Unlike Jordan, I don't automatically install it in every barrel that comes into the house--except for those on a particular brand of factory rifle. I've tested a bunch of them over the years, along with owning several, and it's far easier to install DBC right away than have to clean the bore frequently during testing.)
One thing I started doing decades ago was keep a log of the shots fired through my rifles, including when they were cleaned. I found almost all of them could go a LONG time between cleanings and still shoot fine, often several hundred rounds. And since most of them also shot larger groups for a while after cleaning, I quit cleaning 'em much. Life is good.
