Rookie's mistake

noslerpartition

Handloader
May 26, 2018
995
354
Last week, I sized a bunch of 308 win brass.
Cleaned them, trimmed and wanted to go on.
Until I found what you see in the picture...
Now I size them full length again and repeat the process....
 

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At first I thought I used the neck sizer instead of full length.
But since the die cammed over, the neck should have been ok. They wouldn't have fit some guns, but still there shouldn't have been donuts at the neck.
I quit thinking about it, did it right and now they should be ok.
And yeah - like with hunting: he, who doesn't make mistakes doesn't do it at all. Or not enough...

A few hours later...
Kept thinking what I did wrong.
As said: first idea was I used the neck size die. But that one should have done the neck. All the way, shouldn't it?
I sat the die to cam over. Now, with the FL die, the cases are good.
Chamber well in all the 308's I have at hand.
What did I do wrong first run?
 
Last edited:
yes , the neck die should size the full length of the neck, and they should all be the same .

if it's a bushing die be sure the top of the die that holds the bushing in is tight . the thought I originally had when I first seen how the neck sizing was all over the place was , not fully stroking the press . I wonder if a spent primer got caught in the press , or press linkage , somehow and limited the stroke . as you smashed the primer you sized more .

if you figure it out let me know , I'm curious .
 
Currently, I have no idea.
I am quite sure the press cammed over.so either die should have done ok on the neck.
On the second run, everything was ok. So I think it remains a mystery and I will simply go on...
 
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