Bob.
There are some good YouTube videos from Frank Green from Bartlien barrels.
He no longer uses bronze brushes and recommends against using them.
He doesn't like abrasive cleaners either.
With my bore scope I've seen lines on the top of the lands that could have only gotten there from a brush.
Keep in mind these are SS match barrels and are softer than CM.
For brushes these days I run the Isso blue nylon ones.
I keep a running track ... Constantly scoping.... My bench rest barrels .
No issues that I can detect ...
At least so far.
dave
Good info Dave
I’ll look into those videos. I own nylon brushes. That’s what I used on this barrel for its first cleaning attempt. The range results lead to the offer from a good friend to take a look with his testing scope. Then we went after it to get the crud out.
I am looking forward to figuring out what cleaning regiment this rifle requires.
As I said above I own others that clean and run decent groups with out much fuss.
I’m open to new tricks.
