teflondon100
10-14-11, 21:33
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.
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.