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Clark · October 31, 2012, 02:06 PM

In 2002 I chambered a Mauser in 45acp with a .469" reamer, knowing that the Lee carbide die was .467" and the brass springs back to .469".

Running the brass at high pressure, there was a bulge that was protected from resizing by the carbide ring chamfer together with the shell holder.

I tried cutting off the chamfer with a diamond bit, but the carbide ring broke.
I tried milling the top of the shell holder thinner, but it then broke.

So I wound up pushing the brass up into a new carbide die without a shell holder and then pounding it back out.

I wish I had tried pushing the brass all the way through the die.

October 31, 2012, 02:06 PM	#5
Clark Senior Member Join Date: December 4, 1999 Location: WA, the ever blue state Posts: 4,678	In 2002 I chambered a Mauser in 45acp with a .469" reamer, knowing that the Lee carbide die was .467" and the brass springs back to .469". Running the brass at high pressure, there was a bulge that was protected from resizing by the carbide ring chamfer together with the shell holder. I tried cutting off the chamfer with a diamond bit, but the carbide ring broke. I tried milling the top of the shell holder thinner, but it then broke. So I wound up pushing the brass up into a new carbide die without a shell holder and then pounding it back out. I wish I had tried pushing the brass all the way through the die. __________________ The word 'forum" does not mean "not criticizing books." "Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist. Are we a nation of competing ideas, or a nation of forced conformity of thought?