I just purchased a new(2003) Remington Mod. 7 Laminated Thumbhole SS Mag in .300 SAUM. I have to wait for my dies and brass to get here so I bought a box of Rem Premier 150gr PSPs to get it on paper.
The three shells I fired, (the ejected cases) came out covered with a bluish gray dusty coating :eek:
What gives with this :shock: