Gunsmithing SAMMI Neck Dims for a .30-06?

[JLM]

Anyone know offhand what the neck dimesions are in a SAMMI spec .30-06 chamber?

My friend gave me some fired brass from their rifle and the necks measure right around .339-.340. Brass is Rem, and neck thickness is .012.

Seems to me that if you used thick walled brass, say around .015 you be getting pretty tight in the neck area.

I think the rifle is a Win Model 70, but not sure.

 

[MARKSMAN_JACK]

Re: SAMMI Neck Dims for a .30-06?

SAMMI is .3404" using thicker brass will only be seen on the inside and this can increase pressures at times.