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Crimping for AR

Discussion in 'Handloading and Reloading' started by Crow1108, May 10, 2008.

  1. Crow1108

    Crow1108 Well-Known Member

    Began reloading some rounds for my AR. I'm using 25.5 grains of Varget with a Hornady 55gr FMJ-BT bullet (one of the 100 round Midway bulk-pack deals), and a CCI 400 primer. I was wondering if a roll crimp is advised, and if so, what do you guys usually crimp your rounds to? Thanks!
  2. Bullet

    Bullet Well-Known Member

  3. bullseye308

    bullseye308 Well-Known Member

    Seems like about half the people loading 223 crimp and half don't. I use a Lee factory crimp dis for everything I load personally. Lots of others don't crimp and have been happy. The only answer is whatever works for you, try it both ways and see what you like. Some have reported tighter groups with crimping, some have not. Find what your rifle likes and go with it.
  4. dmftoy1

    dmftoy1 Well-Known Member

    +1 on the crimp using Lee FCD. I've tried it both ways and never had any problems "not" crimping but the bolt slamming the bullet into the feed ramp always made me a bit nervous so I do it purely for piece of mind. (I've shot good groups off of a bench with both)

  5. stubbicatt

    stubbicatt Well-Known Member

    If you are going to crimp, get the Lee Factory Crimper Die. There really isn't a good substitute.
  6. Jacka L Ope

    Jacka L Ope Well-Known Member

    If the bullet has a cannelure, I taper crimp mine.

    Cheers! [​IMG]
  7. mallc

    mallc Well-Known Member

    Ah! To Crimp or Not to Crimp

    I tighten up the neck - but don't knoe that I'd call it crimping when loading bulk on my Dillion. I neck size only and rely on neck tension for accuracy.

    I will say that there is a noticable difference at 200 yds. Although, I JUST started shooting well enough to notice it.

  8. Lariatbob

    Lariatbob Active Member

    Ditto to all the above. If it has a cannelure, crimp. If not, don't. I do the same reloads you do (Varget 25.5 etc.) and have had no problems either way. Personally, I prefer to use bullets with out cannelure.
  9. Walkalong

    Walkalong Moderator

    I either roll or taper crimp all my 55 Gr FMJ/WC bullets for blasting/plinking. I lightly taper crimp Hornady V-Max's for accuracy loads. I just feel better with a light crimp here. It may not be necessary, many don't.
  10. Redhat

    Redhat Member.

    I'm happy with using the LFCD on rounds I load for semi-auto rifles.
  11. Lazuris

    Lazuris Well-Known Member

    I crimp my mil-surp spec ones only not my target loads.

    62g SS109 w/ 26g Varget
    LC brass WSR
    Lee factory rifle crimp die with light crimp.

    2950 FPS +- 20" barrel

    This is a compressed load.

    Accurcy loads

    55g amax 25.5g Varget
    Win brass, WSR

    68g BTHP Hornady
    23.5g Varget
    Win brass, WSR
    2800fps +-

    No crimp on these loads
  12. NuJudge

    NuJudge Well-Known Member

    No need to crimp for AR, M1 or M1A

    I've been loading for them since 1978, and none of them need it.

  13. Redhat

    Redhat Member.

    Other "experts" disagree. I don't make match ammo, but I do want the bullets crimped as that is the way mil ammo is made. I lean more towards reliability.
  14. cracked butt

    cracked butt Well-Known Member

    I've never crimped for the M1 or AR, but I get a bit nervous about the AR- especially after reading on another forum awhile back where a guy Kaboomed his AR nad he thinks that setback due to him not crimping is the reason....
  15. Jacka L Ope

    Jacka L Ope Well-Known Member

  16. kennedy

    kennedy Well-Known Member

    I crimp .223 in my ar for piece of mind only.
  17. SSN Vet

    SSN Vet Well-Known Member

    crimp .223 for use in AR? yes

    how? Lee FCD
  18. taliv

    taliv Moderator

    just put some butter on it

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