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| | |-+  Best Ammo for the M17S 5.56
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Author Topic: Best Ammo for the M17S 5.56  (Read 886 times)
Desert Kraut
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« on: May 23, 2017, 01:45:38 AM »

I am still awaiting the delivery of my M17S  and was wanting some input as to what ammunition you all have been using and which gave you the best accuracy results. Thanks in advance for any suggestions.
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Potss
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« Reply #1 on: May 23, 2017, 02:10:39 AM »

Every barrel is different, and requires node testing.  IF you don't reload, the only way to do it is to buy match ammo and test till you find the best.  Below is a list of results compiled from myself and Molon of the better match ammo available, should give you a place to get started and a shopping list:


.223- GECO 55gr Target 1.2" $.35/r.

5.56- Mk. 262 Mod 1 1.1" $1.06/r.

.223- Federal Fusion 62gr 1.004" $.862/r Gold dots almost as good (including 64 & 75gr $.75/r), Fed Tactical bonded better $1.50/r.

5.56- Black Hills New 75gr Match 1" $.92/r.

.223- Fiocchi 77gr Exacta .995" $.78/r

.223- Nosler Custom Competition 77gr OTM .98" $.964/r.

5.56- IMI razercore 77gr otm .95" $.747/r.

.223- Hornady 75gr Steel Match .95" $.44/r (55gr not much worse 1.3" $.34/r) Will not cut barrel life.

.223- Prvi partizan 75gr Match .91" $.525/r.

.223- Cor-bon 69gr Match .88" $1.10/r.

.223- Austrilian Outback 69gr SMK .86" $.65/r.

.223- Hornady American Gunner 55gr HP .85" $.55/r.

.223 Noveske 55gr Nosler Varmagedon .82" $1.10/r

5.56- Barnes Precision Match 85gr OTM .81" $1.24/r

.223- Stillwood Ammo 77gr Sierra TMK .8" $.86/r.

.223- Hornady 53gr Superformane Varmit Vmax .70" $.799/r

.223- Federal Gold Medal Match 69gr .67" $1/r (2590fps avg), 77gr also recommended $1.10/r

.223- HSM 55gr Berger Match Flat Base .64" $1.47/r.

Ammo that hasn't been tested but might be decent:

Lapua 55gr and 69gr.

Prime Ammo 55gr and 77gr Match+

Monolithic Munitions 40gr and 60gr Gold.

Atlanta Arms 77gr TMK.

Copper Creek 77gr loads.
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SkirmishAblated
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« Reply #2 on: May 23, 2017, 08:49:59 AM »

Wow, hell of a good resource! Any chance you have data on .308 loads as well?
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Desert Kraut
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« Reply #3 on: May 23, 2017, 11:29:45 AM »

Thank you Potss. Your reply exceeded my expectations by a mile. The list will be a great resource for me to get started. I have used some of those in my AR but have a different twist rate on the M17S I have coming and wanted to get an idea of what was working for others. With a new gun, the journey will be fun.
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Potss
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« Reply #4 on: May 23, 2017, 10:48:38 PM »

I do not have much data for .308 yet.  I can tell you my Tikka T3x CTR in .308 will print ~1/2in groups with 168gr FGMM.

As for twist, it doesn't effect accuracy as long as the projectile is properly stabilized, and the M17s will stabilize all projectiles on the above list so no need to worry.  I highly encourage you to post your results in 5x5 or 3x10 format so they can be compared with the data above!
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SkirmishAblated
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« Reply #5 on: May 23, 2017, 11:12:33 PM »

Sadly, I'll be waiting for my M17S 308 for some time yet.
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SkirmishAblated
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« Reply #6 on: May 24, 2017, 01:18:11 PM »

Potss - in your post, are you implying that all those groupings were from an M17S rifle? Or are those just averages gathered across a variety of rifles?
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Potss
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« Reply #7 on: May 24, 2017, 04:38:43 PM »

Those are specifically averages from 3d ARs one with a Krieger barrel, and 2x with Lothar Walther barrels.
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SkirmishAblated
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« Reply #8 on: May 24, 2017, 04:57:06 PM »

Gotcha. Thanks for clarifying!
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Dogslayer
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« Reply #9 on: July 15, 2017, 02:02:03 PM »

The best accuracy I have gotten is with a Sierra 53 grain Matchking over 25 grains
of Varget and  CCI #400 small rifle primers. It gives 1" or slightly under at 100 yards consistently. I have never shot any factory ammo with it. Never played
the Arfcom 5x5 or 10x10 game.

Dogslayer
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Potss
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« Reply #10 on: July 17, 2017, 09:43:55 PM »

Dogslayer you should play the game!  I think we'd all really love to see a bullpup finally up on the challenge, and it would generate a lot of positive buzz for the M17S I'm sure Smiley.
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xdmikey
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« Reply #11 on: August 13, 2017, 12:29:45 PM »

Dogslayer, just wanted to confirm you used an AUG with those loads for those results and the factory trigger? 16 or 18" barrel?

Thanks
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xdmikey
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« Reply #12 on: August 13, 2017, 12:30:45 PM »

Correction, m17s. Yes, I see that's possible now.
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