338 EDGE in Detachable Magazines

Discussion in 'Equipment Discussions' started by M1AShooter, Dec 13, 2012.

  1. M1AShooter

    M1AShooter Active Member

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    I am researching a 338 EDGE build and would prefer a detachable magazine setup. From what I've seen so far, I would need CIP-length magazines to allow longer seating of the bigger bullets. But here is what I'm not certain of...

    My understanding is that the CIP-length magazines are designed around the 338 Lapua Magnum cartridge, and that the vertical rib in the magazine walls will interfere with loading 338 EDGE rounds due to it's longer case length to the shoulder. Is that understanding correct?

    If so, are there magazines that will handle the 338 EDGE rounds without such interference? And if so, is there a specific maker of bottom metal that I would have to go with?

    I've posed multiple questions, I know, so if I can boil it down to one simple question, which detachable magazine setup works best with the 338 EDGE (preferably without modifying the magazines)?

    Thanks in advance!
     
  2. kaseyfied

    kaseyfied Well-Known Member

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    If their was one thing different i would have done with my 338 lapua mag build.. it would have been a hinged floor plate. I have a seeking ext box mag.. i dont like the mags.. shooting prone is hard and in a hunting situation it really gets in the way.. just my 2 cent
     

  3. M1AShooter

    M1AShooter Active Member

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    I've been shooting M1As for years, mostly prone off a bipod, and I've never had any issues with the magzine getting in the way. Shooting an AR prone with a 30-rd magazine is another story. What kind of problems do you have with the magazine in your 338LM? Are you shooting from some other type of rest when prone?
     
  4. M1AShooter

    M1AShooter Active Member

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    Is nobody using unmodified detachable magazines for 300RUM / 338EDGE???
     
  5. Coyboy

    Coyboy Well-Known Member

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    Seekins Precision makes a DBM for the lapua that works with the rum case, single stack 3 or 5 round mags. 3.900" oal. do a web search.
     
  6. kaseyfied

    kaseyfied Well-Known Member

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    Same dbm that i have
     
  7. M1AShooter

    M1AShooter Active Member

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    Thanks Jim. I e-mailed Seekins and Wyatt earlier today asking about their setups, since both websites are a little lean on detailed information.

    kaseyfied, can you provide more details about your disappointment with the Seekins?..