Not sure what that's about but can only assume Guffey is talking off topic in a thread again . This thread has nothing to do with case volume or thin or thick walled cases as it relates to case volume . This is about my chamber and what it's doing to the brass and why .
I will try to type slower: It is not possible to punch hole in the case head with a chamber that has case body support. SO?
there is something seriously wrong with your chamber and I suspect it is caused by the way the parts are assembled.
And then there was the 03; the 03 barrel has an extractor cut. I like the extractor cut because the extractor cut allows for more case head support but on thin case heads with heavy loads the extractor cut allows for the unsupported case head on the extractor cut side blow out.
Back to reloaders and their world evolving around case volume: I said I prefer cases with thick case heads when firing rifles in unknow condition. And then there were reloaders that claimed some 03 chambers had a lot of unsupported case head and they decided that was OK. I did not agree. My 03s have .090" case head protrusion from the bottom of the extractor cut to the case head meaning the 03 has more case head support than the 98 Mauser.
Difference
between them and me? I know when the case blows out on the side of the case head the rifle has a very serious problem; I will not assume anyone knows and or understands, and then there are those that spend most of their time insisting the case has head space.
A more adult thing to do is to check the chamber for unsupported case head and then there is case head protrusion. My 98s have .110" + case head clearance. And then there is the case, most of my 8mm ammo if formed from 30/06 military cases. For those that believe the only thing a case has is volume my military cases have a case head thickness of .200" from the cup above the web to the case head.
And if I choose to thicken the case head by .060" I can do that but I would not think of firing a rifle without checking 'the gap between the end of the barrel and bolt face or as one of use refers to the gap as unsupported case head.
F. Guffey