7 1/2 rem primers

Discussion in 'The Ammo & Reloading Forum' started by jbeam, Nov 23, 2011.

  1. jbeam

    jbeam New Member

    Jul 2, 2011
    have a quick questions about some primers. im reloading for a 223, and i bought remington 7 1/2 rifle primers. everything that ive seen has said that they are for magnum rounds like your 222 mag and such, and that they could cause to much pressure for a 223. havn't looked to much into it. just was wondering if i can use them or not. thanks.
  2. cycloneman

    cycloneman Well-Known Member

    Dec 16, 2008
    Last edited: Nov 24, 2011

  3. steve4102

    steve4102 Former Guest

    Jan 27, 2006
    Sorry, but you guys have been given some bad information.

    First, the 223/5.56 is a high pressure round and the Rem 7 1/2 primer is the correct Remington primer for high pressure rounds. The Rem 6 1/2 primer has a very thin cup and is designed for low pressure rounds like the 22 hornet.

    From Remington's web site.
    In rifle cartridges, the 6-1/2 small rifle primer should not be used in the 17 Remington, 222 Remington, 204 Ruger or the 223 Remington. The 7-1/2 BR is the proper small rifle primer for these rounds.


    BTW Rem 7 1/2 primer are all I use in 223/5.56, 6.5 Grendel and 221 Fireball luv em great primer.
  4. 243winxb

    243winxb Member

    Aug 12, 2011
    What steve said is correct. Good link also.
  5. jbeam

    jbeam New Member

    Jul 2, 2011
    thanks guys.
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