Neck wall thickness on 7 Rem short action ultra mag

[bknight]

Can anyone tell me the neck wall thickness of Remington 7mm SAUM cases? 

Or the diameter of the neck of a load round of Remington 7mm SAUM ammo?

I would also be interested to know the neck wall thickness of 300 SAUM (NOSLER or NORMA) and/or the thickness after necked down to 7mm.

Looking to chamber a long range target rifle in 7mm SAUM.  Use of factory ammo is a non-issue, just want to make sure that it will fit the min. spec. chamber that will be cut (just in case).

Thanks, Brad

[moorepower]

.315 loaded 7mm SAUM. I don't have my micrometer for measuring wall thickness right now. PM for another site for more info.