Neck Turning - Donut Removal

[RichardH]

You really shouldn't have this issue.

How hot are your loads?

All that brass comes from somewhere, I would double check everything you're doing before something seperates.

[Elliott]

You really shouldn't have this issue.

How hot are your loads?

All that brass comes from somewhere, I would double check everything you're doing before something seperates.

Within book max, so not too hot.

I'm a pretty competent reloader, I just want to extract that bit more accuracy and I figured neck turning/reaming could improve things for me.

[Treebone]

Neck turning will give you more consistent neck tension only if you use bushing dies, using bushing dies without neck turning defeats the object of bushing dies because of variations in neck wall thickness, with unturned cases standard dies with a sizing button will give more consistent neck tension then bushing dies. If you get a donut form, KM neck turner mandrels are available with a built in donut cutter. Neck reaming will not remove case neck thickness variations, it is really only used when necking down cases to smaller calibres and then combined with neck turning

TB.

[les302p]

I have to neck turn brass for my 20ppc although it was meant to be a no turn neck. You need to be careful neck turning unless you have a tight chamber as if you take too much off and your reloading dies are normal size you won't get the neck tension. I know from experience as I've ruined a few pieces of brass.

[Parabuteo]

You really shouldn't have this issue.

How hot are your loads?

All that brass comes from somewhere, I would double check everything you're doing before something seperates.

Fair comment.

I did not check the shoulder bump on my 5.56 NATO loads after changing over to another die and ended up with a separated case in a comp. I have had the rifle re barelled since and it has a different chamber profile (to allow for hot service ammo to extract easilly) which works well but again I have to reduce my bumping back/FL die setting.