7MM SAUM Neck Dia. Question

[1Snowcat]

Looking at having a 7mm SAUM chambered but, not sure which neck diameter would be recommended.. I see diameters of .327 and .319 listed..(reamer size)
I'd rather NOT turn necks on cases if possible.

Any input would be greatly appreciated!

 

[Edd]

I have Norma brass. I measured many pieces of brass before I ordered my reamer. My reamer neck diameter is .320" at the front and .321" at the rear.

 

[Coyotefurharvester]

I opened some factory Rem 160 gr partition ammo boxes, .315-.316. 0.002 crimp at the case mouth. Surprised about the crimp.

 

[WSnyder]

SAAMI is .322-.321”

 

[dthomas]

.320 works fine.

 

[1Snowcat]

Thanks for the help guys!