I would be concerned about the "fire cracking" at the throat - I had read that accuracy goes away in the one shot when a chunk of that breaks out. I am like you - not really certain what I am looking at in a bore scope - but I have advantage of some new, unfired "in the grease" Schutz and Larson and custom McGregor barrels to compare with. The only useful thing I have found to do with the bore scope is to monitor the cleaning that I try - becomes VERY obvious what is working and what is not - despite advertising or what was said about the cleaning product by the person at the store.
So far as I know, you have copper residue from the bullet jacket to remove and some soot / carbon from the burning gunpowder - I do not know of any "one" product that will remove both - so use a copper remover to go after the copper, and then a carbon remover to go after the carbon. With that bore scope, you will be able to monitor your progress, and if the substance of choice is working or not. I have found in some older mil-surp type rifles that were likely fired and never cleaned for 50 years - as if the fouling was laid down in layers - no more copper comes out - then go at it with carbon remover - some of that comes out - then back to getting more copper out - as if going through layers in there - looking with bore scope would remove all that "guessing".
Does not have to be sold as "gun stuff" to work - an acquaintance uses a de-carbon stuff made by Mercury Marine to clean out their engine heads - I believe, at least at one time, GM sold a similar stuff for releasing carbon in an auto engine. Apparently works great on the carbon in a rifle bore. Carbon is carbon - you likely need or want something that will dissolve or soften it - regardless what it is marketed for. I was able to flush out a lot of old crap from ignored bores using boiling water poured through - a lot of stuff - rust, insect residue, etc. came out with that - as shown by my bore scope inspection afterwards.
Using that bore scope - you might want to inspect the crown or the "leade" area ahead of the chamber - both are potential sources of "wonkiness".
So far as I know, there is no way to restore that to looking "new", with pits and fire cracking visible - but that may or may not affect what you consider to be adequate. A competitive Bench rest or target shooter guy might toss out barrels that a hunting guy might use for decades. Lapping / fire lapping, etc. is simply going to be removing barrel metal - might "look" better to some people - as mentioned above - is all in the shooting - the group size that the barrel and you produce. I am not certain that the amount of copper deposit that you show is good - I think that should be removed - but is all about whether it shoots well enough for you or not - I have never been able to predict "group size", by looking in the bore with a bore scope - maybe there are some people who can do that.
