Accurate Arms #5 and #7 Data

Reloading info for the 5.7x28mm

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fourpointzero
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Accurate Arms #5 and #7 Data

Post by fourpointzero » 16 Feb 2014, 18:03

I've collected the load data I could find for AA5 and AA7:

AA#7
Image

AA#5
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Last edited by fourpointzero on 16 Feb 2014, 20:38, edited 3 times in total.
I'm no longer concerned about the proliferation of Level IIIA vests.

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grimmond
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Re: Accurate Arms #5 and #7 Data

Post by grimmond » 16 Feb 2014, 18:27

45gr HP/Bee was 1.450" oal and a CCI400 primer.
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fourpointzero
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Re: Accurate Arms #5 and #7 Data

Post by fourpointzero » 16 Feb 2014, 18:34

grimmond wrote:45gr HP/Bee was 1.450" oal and a CCI400 primer.
Thank you. Updated and sorted by bullet weight.
I'm no longer concerned about the proliferation of Level IIIA vests.

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fourpointzero
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Re: Accurate Arms #5 and #7 Data

Post by fourpointzero » 24 Feb 2014, 05:53

You can get the spreadsheet of AA#5 here:

http://numsum.com/spreadsheet/show/135042" onclick="window.open(this.href);return false;

You can get the spreadsheet of AA#7 here:

http://numsum.com/spreadsheet/show/135043" onclick="window.open(this.href);return false;
I'm no longer concerned about the proliferation of Level IIIA vests.

SpaceCoyote
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Re: Accurate Arms #5 and #7 Data

Post by SpaceCoyote » 30 Mar 2014, 09:00

Wow. Blast from the past. I haven't loaded any 5.7mm with Acc#5 since like 2009.

Acc #5 is, in many ways, very similar to True Blue. Deceivingly similar. Both have very comparable burn rates and powder charges. They look very similar, both are very fine & meter well. BUT..... Acc #5 pressure will start to spike a lot higher than True Blue when approaching maximum loads. I've heard many others on the the forum over the years echoing the same sentiment.

If you are someone that already has a bunch of #5 or that's all you can find locally I recommend using it for lighter plinking loads. Or better yet, use it to load some 9mm, some of the most accurate 9mm I've ever loaded was with 147gr plated bullets over Acc #5.

Acc #7 is a good powder. A few years back they did supposedly change the formula and new stuff is not supposed to be as hot. I can't say as I'm still sitting on 3/4lb of "old formula" & haven't tried the new. There is a thread on the forum about this some years ago.

Also, for the sake of your spreadsheet, all of my data is with a standard non-threaded 5" FsN bbl.

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fourpointzero
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Re: Accurate Arms #5 and #7 Data

Post by fourpointzero » 01 Jun 2015, 10:14

Guess those sites have been taken offline.

You can get all data from:

57loaddata.com
I'm no longer concerned about the proliferation of Level IIIA vests.

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