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  1. #1
    Machine Gunner bellavite1's Avatar
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    Default What shellholder for 338 Lapua?

    I am having a hard time with my 338 LM shellholders:
    My brass is a mix of Hornady, S&B and Federal.
    I have been using RCBS #48, since other shellholders appeared to be too tight, but, even though my brass fits in it, it fits too loose and two of my shellholders cracked on one side.
    It appears that 338 LM brass varies wildly in rim thickness depending on brand.
    My Google searches confirm that it is a common issue.
    I am going to try RCBS #14 (supposedly works better with Lapua brass), since RCBS customer service is sending me a free one, but then again I hear Lapua brass has pretty thick rims, so I doubt that it will solve the issue...
    Anybody ran into this and can advise?
    Last edited by bellavite1; 02-25-2020 at 08:12.
    NIL DIFFICILE VOLENTI

  2. #2
    Former Shooter
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    Default

    Depends on the brass like you found , I'll check the numbers on mine when I get home from work . The # 14 RCBS sounds like one of the normal ones though .

  3. #3
    Former Shooter
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    Running Redding # 18 in the adjustable headspace set . I've never cracked a shell holder yet so no help there .

  4. #4
    Machine Gunner bellavite1's Avatar
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    Default

    Thanks to the Reloading Zone, I was able to try the Redding#25 ( still too loose) and the winner, so far, Hornady#43.
    Thanks for your replies, hopefully this was solved...
    You can count on me to have the weirdest problems...
    NIL DIFFICILE VOLENTI

  5. #5
    Machine Gunner whitewalrus's Avatar
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    Default

    i solved the problem by only using Lapua brass to load with. Tried a few various mfrs of shellholders and wasn't able to find one for the S&B and Nosler brass that would hold them tight enough to seat primers correctly so I am afraid I am no help.

    If you do find one that works well for specific brands, may want to post that information up as it may help others.

  6. #6
    Machine Gunner bellavite1's Avatar
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    Will do.
    The Hornady of above kinda works for Hornady (DUH!), S&B and Federal brass, but only kinda...
    Well'see if I'll have any more issues.
    TBC...
    NIL DIFFICILE VOLENTI

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