Borescopes don't necessarily give easy answers to a question like "How is the bore on your .22LR?" That's because there's more to a bore than its appearance. Uniformity of the bore is of paramount importance when it comes to accuracy, but a borescope can't reveal every aspect of a barrel. For many shooters a borescope can be an indispensable part of assessing bore cleaning efforts.
In general, it's a good idea to compare borescope images between different rifles to recognize differences. Machining marks and burrs are not what a rifle owner wants to see in his bore. While some bores may have what appear to be imperfections, they may not always significantly impair how the rifle shoots with good ammo. Borescopes are much, much better than simply looking down a bore and noting that it looks bright and shiny. That doesn't tell anyone very much at all.
At the same time, a borescope can only indicate what the bore looks like -- the appearance of the rifling, the inside of the crown, and the chamber/leade. It can't reveal much if anything about the uniformity of such things as the diameter of the bore, that is whether some parts of the bore are wider or narrower than others or if it is perfectly concentric or how straight it is (barrels may have slight "curves" making them not perfectly straight. These can't be assessed by borescope but may be better done by other means such as slugging or, more expensively, by air gauging.
