Thread: A Soggy Sarurday Put to Some Use

Originally Posted by AMac

Good afternoon Grandpamac
I have spent a bit of time on the internet looking at posts on necking down 300 Saum to 7 Saum as I can't find the 7 but I can find 300 Saum.
Do you have any experience with necking down or advice you could give?
Cheers
AMac (will have to change to Grandadamac by December )

Greetings @AMac,
I have necked down .308W to 7mm-08 without problems just by using the 7mm-08 FL die. There is a chance that the necking down will leave a donut in the neck right at the shoulder. This can cause all sorts of pressure problems until it is removed by neck turning. I have struck this just once when forming .30-40 Krag cases from .303 brass. Proper 7mm SAUM brass would be a better bet. I think that Lapua makes it.
Regards Grandpamac.