09-27-2022, 04:37 PM
LRRPF52 Wrote:6.5 Grendel isnt a relatively high pressure round for modern cartridges. ...
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I dont think we can say that Lapua brass definitely played a role in this. The only possibility there would be this particular piece of brass, not Lapua as a whole, and even thats a stretch.
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I will get to your other points later tonight. In short I'm sorry but I don't agree it's exclusively head space. I will get you my logic later.
On grendel brass pressure I understand what you posted, but I'm just saying it was high enough or different enough that Bill Alexander sought to redesign the feed cone depth because of it. That's all I meant. The pressure of a grendel round was enough to be different from that of a 5.56 round that he knew he had to change the feed cone design to account for it. That's it. I don't really care about the spec value either. I care about what Bill Alexander said about it.
Once again I never said Lapua brass played a role! I said 'weaker brass' played a role. Left out the 'Lapua' intentionally. Also I'm saying that you can't rule it out.
Lastly, I'll note that in all your talk about Lapua brass you don't provide any numerical information that quantifies it as better. But more on this later...