Newbie here. Tikka factory barrel, 6.5 CM, roughly 2000 rounds (I lost count). I started getting fliers after my normal cleaning routine (about every 150 rounds clean with BoreTech Eliminator patches and nylon brush. Alternate until clean patches. Clean neck with one size over bronze brush and eliminator and patch dry). On my last trip out, I also started seeing pressure signs and heavy bolt lift from factory ammo. I was curious if I had a carbon ring problem that had been slowly accumulating on me, so I bought a borescope and decided to check it out before and after cleaning. I didn't find a carbon ring, just very faint carbon build up that cleaned up easily with my normal routine.
However, I did notice these cracks that run across the lands at about 45* to the rifling. There were a handful of them within the first 3-4" of barrel. Are the cracks that run straight continuously across the lands and grooves normal? Is something in the cleaning routine potentially causing them?
However, I did notice these cracks that run across the lands at about 45* to the rifling. There were a handful of them within the first 3-4" of barrel. Are the cracks that run straight continuously across the lands and grooves normal? Is something in the cleaning routine potentially causing them?
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