If we assume that everyone makes a dog occasionally, then RC20 is right on the money. I've had half a dozen shaw barrels, and currently still have one. The current on I bought from GunShack, and is screwed on an XL7. As it came, there was a VEEERY slight tight spot near the muzzle when cleaning. I shoot a lot, so couldn't tell you how many rounds I shot before the tighter portion left, but wasn't long. The barrel has always shot exceptionally well. I have used it and done some scope reviews where that barrel was shooting 55-gal drum lids at a mile. Cleaning compared to a hand lapped barrel, will be more until you get it smoothed out from firing.