Powder coated vs lubed cast bullets and throat/bbl erosion


Well-Known Member
Probably has more "give" to it too. Not sure how to term that idea...surface strength?
Its hard ta measure but "30" is what I learned and have read as well. Ya cannot measure a bullet "thru" it. Ya need file it off BOTH ENDS as it compresses differently too giving false values.

But yea it can move and not be breached.



At the casting bench in the sky. RIP Bret.
Flexible-ness? Up above I wrote I wouldn't be concerned until it got up to 50Bhn or so. I meant ROCKWELL! Duh!
Last edited: