Bushing advise

[TreeRanger]

I'm a very interested observer and as a result of all of the good info here, have started a 6mmbr project which leads me to my question. Bear with me a moment to give you the background. I have a Pacnor barrel for a Savage action on order. It was ordered as a "no turn" chamber which I understood to mean 0.272. . The new Laupa brass is now in hand and I've begun to think more about case preparation as I wait for the barrel. I purchased Redding dies with a 0.272 bushing. The new brass is smaller,exact size escapes me) but attempts at sizing has no effect. In order to be prepared for arrival of new barrel and loading ammo, should I seek another size bushing? If so what is your recommendation? Will the brass expand to my current bushing?
This is a ittle of uncharted waters for me, so your counsel will be appreciated. Thanks!

 

[Forum Boss]

.272" is the diameter of the chamber. Your ammo, with a bullet in place, will probably be about .2685-.269",with unturned necks). Generally, you'll get best results using a bushing that is .001" or .002" less than the neck diameter of the loaded round.

We would get a .267" bushing to start with, and then maybe a .266 or .268 as desired. Different bullets may require different bushings, and different lots of brass may have slightly thicker/thinner necks. But a .267" is a good bushing to start with.