My Fazzy's barrel

[Surpmil]

Here for comparison are a few I took of a Ross bore years ago with a cheap bore scope; I see there is a similar problem with depth of field.

Your bore looks evenly rough, and to me that suggests fine, surface corrosion, but have any cast bullets been shot from the rifle? Maybe try a bit of Motty's Paste or similar on a brass jag & 4x2 and see how it looks then?

The Ross bore also had some fine pitting from corrosion as you can see.