As the title states, I'm slightly concerned about the depth of this gas block dimple. It's my fault. The QPQ finish was a bitch to get through and it cut pretty quickly after the bit made it through that. I should have taken it slower.
Anyway, the barrel is .750 at the gas block journal and it's a .300 AAC Blackout, so I assume .308 diameter bore. The dimple is approximately .080 in depth at the center (generous estimate, it is certainly no deeper than that). By my rough calculation, that should be roughly .141 inches of material remaining. Is this in any way unsafe or problematic?
I'm a little OCD about this kind of thing. If it's a problem, I'd rather scrap it and make it right (replace the barrel) rather than take any chances. If it's merely a cosmetic issue at this point I'll make my peace with it.
There is a slight amount of "wall" to the would-be dimple. I touched it up with cold blue, it's easier to see the depth.
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