Neck flare when using Type-S die

[squirrelsnpr]

I posted something similar to this a while back. What im getting is a very slight flare at the very tip of the case mouth on the outside of the brass. I believe its coming from my bushing type neck die. Im reloading for a .308. Im reducing the fired necks about .007" Are the outside leading edge of the necks dragging on the bushing prior to being forced into the bushing? If this is the case id like not to neck turn. Any recommendations. Thanks in advance.

 

[Joe R]

How do you clean your brass?

Im reducing the fired necks about .007"

What is the neck measurement of a loaded round? What size bushing are you using to reduce the neck? What type/model of rifle are you shooting? With more info I may be able to help.

Joe

 

[jonbearman]

How far do you size the actual neck? Did you back off the cap that holds the bushing slightly to let the bushing float? If the neck can go all the way through the neck bushing the flare will result and when you retract the case the flare will remain.

 

[LCazador]

You're probably hitting the cap that holds the bushing flat. Like Jonbearman says let the bushing float slightly you don't need to size the entire neck. I wouldn't turn any of those necks as you will have two dimensions on your bullet tension.

 

[Corey Schwanz]

If you shake the die, can you hear the bushing rattle inside. You should be able to. If you can't hear it, back it off a tad to allow it some float. It does sound like the case mouth is "bottoming out" inside the die and flaring the mouth open on you.

 

[jsthntn247]

Are you saying the flare is inward or outward? I've noticed mine have a flared in look before .

 

[artbosco]

You only need to size about 70% of the case neck. The 30% not sized helps center the case in the neck chamber. Listen for a slight audible rattle within the bushing cavity to know when you haven't over adjusted the bushing.

 

[4xforfun]

I've seen the flair before when making my dasher brass. I get the flair when i neck up from 6mm to .257.

 

[CatShooter]

The Redding bushing is longer than the 308 neck, so it is impossible for the neck to be "bottoming out" on anything.

What make brass is it - US brass typically has a tiny flared edge that comes from the way they make it.
Lapua and Norma don't.

 

[Elkbane]

I've seen the same thing when I try to reduce the case neck diameter too much in a single pass. You'll probably need to use an intermediate sized bushing for the first pass, then take it down to final OD with your current bushing.

Elkbane

 

[243winxb]

Remove the bushing and run a fired case into the neck sizing die. Is the neck diameter reduced? If it is, you have a die problem.

 

[DHD]

I see it when I size the brass too much in pass. Here is what I mean: In my 308, the neck is .342". Hornady Match 308 brass is .333ish" with a 175 SMK. If I use a .332" bushing and size it in one pass, I get a little bit of a bell at the mouth. It does not happen if I size it with a .336" bushing first, then .332" next.

Why go to the trouble? Well that brass flat out makes great ammo.

FWIW, Lapua Palma is .337" with a 175 SMK, and I do not get the bell. It may be the Hornady brass, but I seem to remember German Salazar describing this same issue in his blog. I do not remember what year/month it was in, but since the whole blog is worth reading, you will have to look it up....... He was refering to the 30-06 specifically in that article.

 

[jsthntn247]

Sizing too much in one pass is the problem. Use a neck die first with a bushing that cuts the sizing half way down then us a fl bushing with your normal bushing to complete the sizing.