I have a carbon wrapped barrel in .308 that I have thought about having bored to .338.
I reached out to the manufacturer about any differences in the blank diameter between a 30 cal blank and a 338 cal blank and they wouldn’t disclose any info.
So question is, does anyone out there know if...
HBN is white. It stands for Hexagonal Boron Nitride I believe. It hasn't turned any that I have done grey, just dulls the bright copper look of new bullets.