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First 300blk reload...OAL Question

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  • skyscraper
    Calguns Addict
    • Feb 2011
    • 5198

    First 300blk reload...OAL Question

    Here is a pic of my first rifle reload. The bullet is a pulled 150gr roundnose. As you can see I seated it to the cannelure, but my OAL is really short. I trimmed the brass to 1.358.

    According to Saami specs(http://www.saami.org/pubresources/cc...20Blackout.pdf) the max OAL is 2.260 and min is 1.780.
    My question is: Are the measurements ok, or too short? Or must I seat them past the cannelure to increase the OAL? I cant find anything in the dillon or lyman book that says you can seat past the cannelure. My only concern is that when searching dozens of pages on 300blktalk, nobody else is loading this short... Thanks
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    Last edited by skyscraper; 07-04-2012, 2:56 PM.
  • #2
    anyracoon
    Veteran Member
    • May 2006
    • 3698

    For what it is worth, the last batch I ran using 150gr FMJBT I set my OAL to 2.06, while the 110gr Frangibles I set at 2.2.

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    • #3
      joelogic
      Calguns Addict
      • May 2008
      • 6593

      They look pretty short. When loading 300BLK ignore the cannalure and load to a safe pressure. What powder/weight are you using? You sure that is a 150gr bullet? Are you trying to go subsonic? With 18grs of A1680 there is no way I could seat a bullet that deep.

      I seat to max mag length with 150gr bullets. I found they feed better.
      Micro/Mini Reflex Red Dot Sight Mount for the M1, M1a/M14 platform

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      • #4
        skyscraper
        Calguns Addict
        • Feb 2011
        • 5198

        Thanks guys. I just wanted to make sure I can ignore the cannelure when loading it. They are 150gr and I'm loading with h110 for supersonic

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