Neck size or full length size for AR 15?

Discussion in 'AR15/10 Rifles' started by CRNA, May 23, 2012.

  1. CRNA

    CRNA Well-Known Member

    Messages:
    508
    Joined:
    Jan 5, 2010
    I ordered the Lee neck sizer and seater dies for my AR 15 that's on backorder. I wonder how many reloads I can get before having to full length size? Or should I full length size every time?
     
  2. barnesuser28

    barnesuser28 Well-Known Member

    Messages:
    2,808
    Joined:
    Mar 2, 2012
    i would defianatly fl size every time to ensure feeding and reliability
     

  3. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,307
    Joined:
    Jul 29, 2004


    +1
    Gas guns that are Rapid fired should be full length sized for function reliability.



    J E CUSTOM
     
  4. kweidner

    kweidner Well-Known Member

    Messages:
    230
    Joined:
    Oct 24, 2005
    I actually have to use small base dies that are fl. All my shooting friend have to do the same. Just not going to chamber without full length and even possibly small base dies.
     
  5. ragsflh

    ragsflh Well-Known Member

    Messages:
    245
    Joined:
    May 4, 2011
    need to fl size each time in ar's
     
  6. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

    Messages:
    4,380
    Joined:
    Jan 31, 2008
    +1
    You need to trim every time as well
     
  7. Locknload

    Locknload Active Member

    Messages:
    29
    Joined:
    Sep 21, 2009
    Suggest you cancel the back order, unless you have a 223 bolt gun to use the neck dies with. Rule of thumb, all brass scatterers need FL dies.:)
    Ed
     
  8. Greyfox

    Greyfox Well-Known Member

    Messages:
    3,707
    Joined:
    Jan 21, 2008
    I have been using the RCBS FL, X dyes for about 4 years with 3 different AR rifles. Never trimmed, no failures to feed. I was skeptical about the x dye which maintains the OAL of the case each time the case is sized. It works. I get over 10+ reloads per Lapua case. Just need to follow the instructions on the initial set up od the dye.
     
  9. Lefty7mmstw

    Lefty7mmstw Well-Known Member

    Messages:
    4,280
    Joined:
    May 13, 2012
    Cool on the x-dies; I was wondering if they were good or not.
    +1 on full length sizing with trimming(rum em through a gauge for max length)