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What's a "standard velocity" load that will function an AR with SS109s?

Discussion in 'Handloading and Reloading' started by Bexar, May 11, 2014.

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  1. Bexar

    Bexar Member

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    I have a considerable amount of SS109 projectiles I'd like to have a plinking load that will reliably function a like knew M&P15 16" 1-9 twist rifle. Don't need and even prefer it not be a barn burner just a tin can assassin.

    I have IMR 4895...IMR3031...H335...and BL-C2.

    CCI 450 small rifle magnum primers.

    Once-fired LC-brass.

    I'm saving the new brass for some Sierra SPBT hunting loads.

    Thanks
     
    Last edited: May 11, 2014
  2. Walkalong

    Walkalong Moderator

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    Any data from load books or online PDFs with those powders will function your AR.
     
  3. 243winxb

    243winxb Member

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    I would pick the one that uses the least amount of powder per shell for plinking. Most times, this is the faster burn rate powders.
     
  4. Dudedog

    Dudedog Contributing Member

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    Don't know about the SS109, but was using 25grns BLC2 with 62gr Privis, seemed to shoot well in my AR and Mini14.
     
    Last edited: May 12, 2014
  5. ArchAngelCD

    ArchAngelCD Member

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    Just a note, you should have asked about a standard pressure load, not standard velocity.

    Of the powders you listed with those magnum primers H335 will match up well. With that 55gr bullet I use 25.0gr H335 as my standard AR-15 load. In reality all 4 powders you listed can be used but IMO H335 is the best choice for the .223 w/55gr bullet. Next would be BL-C(2) then IMR4895 and IMR3031 last.
     
  6. Bexar

    Bexar Member

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    Maybe I don't have the bullet descriptions right but isn't the SS109 a 62-63 grain bullet.

    Thanks
     
  7. ArchAngelCD

    ArchAngelCD Member

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    My mistake, sorry, the SS109 bullets are 62gr, the M193 bullets are 55gr...

    Either of ball powders (H335 or BL-C(2) ) will still work well with the 62gr bullets.
     
  8. joustin

    joustin Member

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    I use 24.5 grains of WC844/H335 under them.
     
  9. Bovice

    Bovice Member

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    Something to keep in mind is that lower pressure rounds are not going to burn as cleanly. That is the name of the game with an AR-15. You don't have to run max, but don't just get it to barely scrape by.
     
  10. Steve C

    Steve C Member

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    Any of the start loads for 69gr bullets should operate your Mp. Pick your powder since they all use similar amounts but you can save a little by using the one that has the lower charge wt. Your mag primers will work but are not needed.

    [​IMG]
     

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