6mmCM Neck Bushing Help

[Wheres-Waldo]

Trying to order my dies in advance of having the rifle built.

If this approach is asking for trouble, I can wait as well.

I’m trying to determine the neck bushing size I’d need in a 6mmCM, Peterson brass, no neck turning for .001-.002 tension?

 

[Supersubes]

I use a .269 with Peterson brass.