Personally ??
Me I would do what I've done with a "new" (used, new, or new to me) and is honestly have a rod, jag, and patch, Fire X amount, patch through, remove patch and jag from muzzle before pulling rod back (only cross the muzzle once, never pull back through, protects the crown). Fire XXX (qty of shots don't matter) amount repeat, whether to used a patch with Hoppes or CLP is up to you, or dry. I'll usually start the first time through with CLP, then dry patch, after that one patch dry after x shots. My reasoning for this is simply to break up / remove some carbon to reduce the ability to "cake" not to really clean or "break in". I'll only do this on the first outing, after that I'll clean after shooting.
The other reason for doing so is "IF" there is any abrasives left over from lapping by the barrel maker, a just in case. Which I doubt they are all pretty good about clean-up.
Bore scoping, yeah I simply refuse to do it, regardless of age of the rifle. As I think it "scares the accuracy out of the barrel". Just a opinion, many cling to the practice, can't say they are wrong. Now will I look with a naked eye, down the bore yes Sir, every time. But all I'm paying attention to is concentric rings of the rifling, and seeing if there is any "hooks". In my opinion it (bore scoping) honestly will show a "flaw" that isn't a issue, now the shooter believes there is a problem, and accuracy does south. Once the shooter does not trust the equipment it will never perform. Like I said just "my" opinion.
While I did notice some things in the video none was in my opinion detrimental to the barrel IMHO.
