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To Cannelure or not Cannelure

Discussion in 'Handloading and Reloading' started by JonB, Nov 27, 2007.

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  1. JonB

    JonB Member

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    Thought I would start yet another thread today. I have .223 dies on the way, and will be heading out to price some components.

    Gun: AR-15 16" HBAR. Press: Lee Hand press with Lee .223 Pacesetter die set.

    Mostly looking for target/plinking bullets - so most likely 55 gr FMJ. Possibly some 62 FMJ as well.

    What do all you expert reloaders recommend getting - Cannelure or no cannelure? I suspect the cannelure variety are easier to set/get COL easier, but other than that, any pros/cons?
     
    Last edited: Nov 27, 2007
  2. rcmodel

    rcmodel Member in memoriam

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    I think you won't have a choice with 55 or 62 grain FMJ-BT bullets.
    All I have ever seen for sale have a cannelure.

    For use in any AR or other semi-auto, I do recommend a crimp, just to insure no bullet set-back is possible during feeding.

    For that, I recommend you get a Lee Factory Crimp Die.
    You can crimp with the regular seating die, but it is very easy to slightly buckle a shoulder so slightly you can't see it, but the round won't chamber.

    The Lee die requires a separate crimping step, but is fool-proof. There is no way you can buckle a case.
    It will even nicely crimp SP and HP & Ballistic-Tip varmint bullets that don't have a cannelure.

    [​IMG]
    rcmodel
     
  3. JonB

    JonB Member

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    The Pacesetter die set I ordered has the FCD included and I had planned on using it.

    Thanks rcmodel
     
  4. snuffy

    snuffy Member

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    I don't care whether a .223 bullet I buy has a cannelure or not. I have yet to crimp any of the ammo that I have loaded for my bushy AR, don't plan on ever crimping any. As long as the dies are producing enough neck tension, there's no need.

    A lot has been said about bullet set-back being caused by the ramming force of the bolt, the hitting of the feed ramp causing the bullets to be driven deeper into the case. I just haven't seen it with my rifle.
     
  5. rcmodel

    rcmodel Member in memoriam

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    Some rifles do, some rifles don't.
    Until proven otherwise, I think it's best to error on the side of caution and crimp .223 & .308 for semi-auto use.

    But that's just me.

    I didn't crimp for 30 years either for use in Colt AR's, and a Ruger Mini's.
    Then I tried a Lee FCD and cut my group sizes almost in half.
    So now, I crimp.
    Go figure!

    [​IMG]
    rcmodel
     
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