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


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Bexar
May 11, 2014, 10:34 AM
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

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Walkalong
May 11, 2014, 12:22 PM
Any data from load books or online PDFs with those powders will function your AR.

243winxb
May 11, 2014, 12:44 PM
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.

Dudedog
May 11, 2014, 01:44 PM
Don't know about the SS109, but was using 25grns BLC2 with 62gr Privis, seemed to shoot well in my AR and Mini14.

ArchAngelCD
May 11, 2014, 05:43 PM
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.

Bexar
May 11, 2014, 05:48 PM
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.
Maybe I don't have the bullet descriptions right but isn't the SS109 a 62-63 grain bullet.

Thanks

ArchAngelCD
May 11, 2014, 05:57 PM
Maybe I don't have the bullet descriptions right but isn't the SS109 a 62-63 grain bullet.

Thanks
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.

joustin
May 11, 2014, 06:45 PM
I use 24.5 grains of WC844/H335 under them.

Bovice
May 11, 2014, 07:36 PM
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.

Steve C
May 11, 2014, 11:32 PM
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.

http://http://www.thehighroad.org/attachment.php?attachmentid=198262&stc=1&d=1399861787

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