General Firearm Discussion
I think that this interview with Bobby Tyler will resonate with most of the folks here on this forum.
Bobby does some great work!
https://www.ballisticmag.com/2019/06/18/bobby-tyler-casehardening/?fbclid=IwAR2mLiOEZe49g4HmWsxHGSJs7hJkurL_iNUIHjSpFjBrq27nG06vwDjujs0