I would rather not post who the maker is until they have had a chance to look at it and give their opinion. I work in the industry and I cant stand people posting stuff without knowing all the facts that they can first. I will say this, its a TOP tier manufacturer that I would not expect to have bad steel.... but that is what I am thinking
Unfortunately, no, these are deep pits. like what I have seen on a breach face with punctured primers.
Just unexpected with a low easy round count in a non-overbore cartridge. If it becomes a real issue I’ll see if it can be set back. Proof said it was from moisture damage or leaving solvent in the barrel neither of which have occurred as this was only the second time to clean it with solvent. First was following their break in instructions.
How did you clean it?
Almost looks as if there was porosity/voids in the parent material and the surface gave way. Edges do not seem rounded or worn as if heat or some type of corrosive agent was used. Looks "flaked". I have seen this in mill runs of materials on occasion, though rare, and never have seen it in a barrel blank. Curious as what your barrel maker has to say on this one.
The first time? Per their instructions. Wet patch after 3 shots and cool, dry patches until bore dry, shoot more, repeat. It never did copper foul any so I stopped at round two of the procedure. This issue had to occur in the last 6mo or so. The break in occurred in early 2019 and I’ve scoped it yearly. It’s a hunting rifle so I’m not out banging away at the range. The barrel never had any issues so I’ve just dry patched it and followed up with a light oil patch after firing before putting it away in the safe for storage.
