My cure for case neck runout
Being new to the forum I would like to say hello to all.
Browsing through post from the past I see some here who are trying to avoid runout. This is my loading procedure and has giving me great results. (0001 or less) I am sure a lot, if not all may find this practice a waste of time, and I am not real fond of the process myself...but it works. I shoot mostly bolt guns with tight neck chambers which eliminates this process. But when I load for any SAMI spec chamber this is what I do.
The example will be my AR-10 Noveske barrel. Lapua brass - neck turned down to 14 thousands. Not part of the process, just something I do.
A fired case neck measures right around .344
I full length size using a Redding S with a .342 bushing. I then move to my Redding neck sizing die with a .340 bushing. I change then to a .338 bushing. I then use a Sinclair expander mandrel lightly lubed. Keep in mind this is my AR-10 and it beats the necks up. For a bolt gun I skip this step. I then go back to the neck sizing with a .336 bushing then a .334 bushing, which gives me 2 thousands neck tension. I then check them all with a Sinclair concentric tool. I know this is a lot of steps and may seem foolish to many. I am curious to hear other ways. I have looked at the Hornady concentric gauge that fixes runout. But I wonder what effect it has on neck tension.
Lord, make me fast and accurate. Let my aim be true and my hand faster than those who seek to destroy me. Grant me victory over my foes and those that wish to do harm to me and mine. Let not my last thought be if I only had my gun. And Lord if today is truly the day that you call me home, let me die in a pile of empty brass.