Nosler brass thickness problems?

Discussion in 'Reloading' started by Shumba, Oct 11, 2011.

  1. Shumba

    Shumba Well-Known Member

    Aug 14, 2008
    I purchased some Nosler 300 RUM brass for my 338 Edge and I have run into some issues. I am curious if anyone else has run into these issues.

    First, the primer pockets are so tight my K&M priming tool cannot seat the primers fully into the pockets, leaving them protruding above the case head.

    Next issue is neck thickness. I loaded up 10 rounds to break in my new Edge. I loaded a light load 5gr below Shawn C listed load for 250 SMK. During break in I noticed several cases had slight ejector marks, this surprised me because of the reduced load.

    Yesterday I drilled and threaded a fired case to fit my Stoney point gauge. Upon inserting a Berger 300g hybrid in the case to take a land depth measurement I found the bullet would not go in the fired Cade neck... WTH??

    The lightbulb in my head came on! I got out my neck thickness gauge and took some measurements of the Nosler case necks .016-.017.

    Well .017x2+.338=.372 That explains the ejector marks on the cases fired in my .371 NK 338 Edge!

    I measured some Remington 300 RUM brass necks and it come out the typical .014-.015. Has anyone else ran into this "thick brass" and primer pocket issue with Nosler brass?
  2. Boss Hoss

    Boss Hoss Well-Known Member

    Nov 10, 2005
    Last edited: Nov 7, 2011

  3. newmexkid

    newmexkid Well-Known Member

    Apr 11, 2011
    I turned the necks on my Nosler brass right away. I have not had any problems with the primer pockets and I'm on my 6th reload on my .243
  4. Tumbleweed

    Tumbleweed Well-Known Member

    Oct 20, 2007
    My latest batch of Nosler Custom brass for my 300RUM typically measured between .015-.016. Most of the time they were right at .0155. I attempted to to neck turn a couple just to perfect the slight variance and found that the brass out of the box was too tight to even get my turning mandrel in without damaging the i.d. of the brass. I suppose if I sized them first I could turn ok.