neck turning for 260?

[simplerider]

By far the easiest and most accurate method is by making a chamber cast.

Bill

How exactly would I go about that?

Also, when do neck donuts occur? is it during resizing or after firing?

[BillPa]

How exactly would I go about that?

when do neck donuts occur? is it during resizing or after firing?

You use Cerrosafe to make a chamber cast. Its not difficult.
http://www.youtube.com/watch?v=DByaASz_HNk
http://www.youtube.com/watch?v=voMp0IQwDLU

I can't say for sure when donuts form, some say only when resizing and others when firing. I say they're a result of both. The only time they cause problems is when bullets are seated on or past them. If you want to check for them run a gauge pin or pin turned just under the sized neck ID to check.


Bill