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Old March 25, 2020, 07:03 PM   #1
baddarryl
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Rock River NM load?

Hi all. I am waiting for a Rock River National Match A4 with 1:8 twist and 20 inch stainless barrel. For those that have them what loads have worked best for you? I am going to start with Factory, but considering current events may get into loading for it sooner rather than later. Right now I’ll be setting it up for Appleseed KD, but hopefully will get into NRA Hi Power 600 yard matches if they ever start up again. Thank you.
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Old March 31, 2020, 08:53 PM   #2
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No one?
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Old March 31, 2020, 08:55 PM   #3
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5.56/.223 by the way
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Old April 1, 2020, 05:44 AM   #4
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Is it a 5.56 chamber or do they offer a .223 Wylde chamber?
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Old April 1, 2020, 09:13 AM   #5
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This may not help much, because of the powder I'm using. I shoot reduced course NRA High Power at 200 yards with a RRA NM AR15 w/Wylde chamber. It's probably just like yours or very similar. The rifle and load shoot better than I do.

69g SIE HPBT Match bullet over 22.5/Data 2230-C, LC 11 cases (batch dedicated just for this rifle) with CCI #41 primers.

Data 2230-C was a surplus powder that was ready available some years ago and cheap. Burn rate is close to BLC-2 or 2460. I bought a bunch of it, and it's just about all gone. When it is gone I probably switch to H335.
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Old April 2, 2020, 02:47 PM   #6
COSteve
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Quote:
Originally Posted by kymasabe View Post
Is it a 5.56 chamber or do they offer a .223 Wylde chamber?
All their NM are Wylde chambered.
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Old April 2, 2020, 08:12 PM   #7
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Yes .223 Wylde
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Old April 3, 2020, 10:23 PM   #8
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24gr rl15 hornady 75gr bthp thats an old standby across the course load. Works well in everything I have ever ran it through.
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Old April 4, 2020, 07:49 PM   #9
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Hornady 68 gr HPBT over W748 max book load. It shot well enough for me to shoot expert.
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Old April 5, 2020, 06:02 AM   #10
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Hornady 75gr BTHP over a max load of IMR 8208
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