Powder coated vs lubed cast bullets and throat/bbl erosion

[Bret4207]

Cured powder coat is about 30 bhn. Softer than copper.

Probably has more "give" to it too. Not sure how to term that idea...surface strength?

 

[CWLONGSHOT]

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.

CW

 

[Bret4207]

Flexible-ness? Up above I wrote I wouldn't be concerned until it got up to 50Bhn or so. I meant ROCKWELL! Duh!