Which primer question

Discussion in 'AR-15 Discussion' started by Tenderribbs, Nov 7, 2012.

  1. Tenderribbs

    Tenderribbs New Member

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    I'm just starting to reload some 223 55 g. Fmjbt With H335. And have a question on primers do I use the standard small rifle primer or the magnum primer? I have read both can be used.

    Sorry cant find a reload site on gun forum
     
  2. msup752

    msup752 New Member

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    If you are shooting a semi auto, you want magnum or military primers. CCI and Wolf make military primers.
    AR style rifles have firing pins that are free floating and will strike the primer when the bolt is closed on a live round. The primers I listed are thicker and less likely to detonate due to the free floating firing pins.
    If you use a bolt gun, standard primers are fine.
     

  3. jjfuller1

    jjfuller1 New Member

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    i use CCI standard small primers(400). with my 55gr fmjbt, and h335. try a few of both and see what works. i only had stanard so thats what i used.
     
  4. AgentTikki

    AgentTikki New Member

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    Please share your barrel specs, results and recipes! /subscribed

    Are you gonna try any other powders?
     
  5. Tenderribbs

    Tenderribbs New Member

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    Yes this is my first load so I'm totally new I got a pound of H335 and some Sierra blitz 55 gr FMJ/bt to start with. I chose 335 because of its popularity of it . There's a lot o recipes for it. Any recipes are welcome. By the way it's a 16in 1 to 9 twist. Now that i know to use the military primer i will use the CCI primer Thanks in advance
     
    Last edited: Nov 7, 2012
  6. rjd3282

    rjd3282 New Member

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    Lyman manual does not show magnum primers being used with any load. Their test gun was a Colt AR 15.
     
  7. jjfuller1

    jjfuller1 New Member

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    my speer, and hornady books both suggest magnums
     
  8. Tenderribbs

    Tenderribbs New Member

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    Thee seems to be a little confusion on the type of primer maybe?
     
  9. jjfuller1

    jjfuller1 New Member

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    i think the magnum is suggested to make sure all the powder is burned evenly.. like i said up there^. i use standards, and they work just fine.
     
  10. locutus

    locutus Well-Known Member Supporter

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    The Remington #7 1/2 small rifle primer is MilSpec. The #9 1/2 large rifle primer is also MilSpec.

    CCI makes special order MilSpec priners as well, but I've never used them

    For 5.56X45 I use Remington 7 1/2 exclusively.
     
  11. Txhillbilly

    Txhillbilly Active Member

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    I use standard CCI or Winchester small rifle primers for all of my 223 loads.
    I've never experienced any better results using a magnum primer in a small caliber,and would only use them if a load called for them exclusively.
     
  12. rjd3282

    rjd3282 New Member

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    If the load calls for them then use them if the manual says use standard and you want to use a magnum I'd reduce the powder charge a bit.
     
  13. Tenderribbs

    Tenderribbs New Member

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    Ok thanks for all the info . My Lee master loader instructions say do not use magnum primers. So when all else fails , following the instructions would probably be the safest option. I am going to load a few and try them as I go . Thanks again