7mm neck bushing size?

[lutheran]

What neck bushing diameter recommended for Nosler 280 Ackley brass? How thick are necks? This will be for hunting rifle use.

lutheran

 

[Catfish]

You have not given enough info for me to tell the answer. First what is the neck dia. of the chamber? I like to get .002 neck expantion when a round is fired. That means I want the neck of the loaded round to be .002 below the the dia. the chamber. .005 is not to much for a hunting rifle. To get the correct neck thickness of the case subtract the bullet dia. from the chamber neck dia. and subtract .002 for spring back and that is the dia. of the neck bushing you need. If that is not clear, pm me and I will try to help you understand the consept.