7mm SAUM Bushing sizes

[Walkabout]

I'm about to build a 7mm SAUM.
I will be using Norma 7mm SAUM cases, Redding Comp dies and a no turn SAAMI spec reamer with Berger 180 hybrids
What size bushes would you recommend I get for the dies for neck sizing?

M

 

[bsumoba]

I guess the first thing I would do is if you have the bullets and the brass, to load up one as is and measure the overall OD of the neck of a loaded round.

If your loaded round is 0.314, then get .313, .312, and .311. This should cover almost all the typical neck tension you might want to try or use.

If your loaded round is 0.312, then get .311, .310, and .309.