Nifty-two-fifty,
Glad you like that guy, whoever he is!
I have also seen brand-new, hand-lapped custom barrels that would take at least a dozen fouling rounds to settle down after cleaning. In fact one drove me nuts until I figured it out. I'd go to the range with a dozen or maybe 15 handloads to test, and the rifle wouldn't shoot worth a darn. Then I'd go home, clean the bore, load some more ammo, and head back to the range.
Finally didn't clean it after maybe the 4th range session, and the next time it shot great! Turned out it would go 75-80 rounds before groups opened up, and even then it was only slightly.
