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Tx John. Taking a break from fullbore, but I do see Duncan at service rifle shoots.

Also been trying to get hold of Mike, but he is a hard guy to get on the other side of a phone :thumbsup:

Guys,

Can anyone pls shed some light on the differences between how brass deforms and "grows" during firing when comparing a case like 308 that headspaces on the shoulder vs a rimmed case like 303...