5.7x28mm RELOAD DATA - Page 6

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Thread: 5.7x28mm RELOAD DATA

  1. #51
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    6.0 grains, VV 3N38, Nosler 40 grain Ballistic Tip, CCI 400 Small Rifle, Trim 1.131" OAL 1.580"
    1857
    1775
    1814
    1787
    1752
    1754
    1763
    1761
    1773
    Avg 1781, Extreme Spread 105, Standard Deviation: 34


    6.1 grains
    1796
    1792
    1799
    1804
    1777
    1777
    1740
    1849
    1828
    1839
    Avg 1800, Extreme Spread 109, Standard Deviation: 32


    6.2 grains
    1821
    1821
    1811
    1862
    1819
    1809
    1823
    1821
    1854
    Avg 1826, Extreme Spread 53, Standard Deviation: 18


    6.3 grains
    1826
    1841
    1834
    1851
    1859
    1844
    1831
    1839
    1854
    Avg 1842, Extreme Spread 33, Standard Deviation: 11


    6.4 grains
    1851
    1834
    1841
    1834
    1851
    Avg 1842, Extreme Spread 17, Standard Deviation: 11

    That's my load with 3N38. Haven't been able to find N105, but since I'm so pleased with 3N38's performance I don't see any reason to change. That's just over 100 fps faster than factory loaded SS197SR, and much more accurate.
    JMike thanked this.


  2. #52
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    Dang wish you could compare to some 105... If you were in central TX I'd give you some to try.

    I don't have my notes nearby but I found more velocity by loading to almost magazine length for more case capacity.
    Last edited by mattr66; 09-01-2015 at 12:41 AM. Reason: More info
    Just misunderstood most of the time!

  3. #53
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    In Santa Fe, New Mexico, so not really close to central Texas. The 40 grainers worked great for me. 1842 avg is acceptable. I'm gonna try some lighter bullets and see if I can pull the speed up, then I'm going to mimic some ballistics gel and hit it with all my loads and see what kinds of gooey goodness I can wreck.

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  5. #54
    Senior Member blizzardscout2's Avatar
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    Thank you for the load data. I might have to give it a try.
    SAVAGEJIM thanked this.

  6. #55
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    I had some strings for the 30 grain varmint grenade at 6.4, 6.5, 6.6 and 6.7 grains of 3N38, but it started to rain and I was getting some very inconsistent velocities. Given how sensitive the chrono is, I couldn't vouch for those readings and pitched them. I tried 6.8 and 6.9 on a clear day and got a lot more believable shot strings.

    30 Grain Varmint Grenade, VV 3N38 @ 6.8 grains, CCI 400 small rifle, 1.131" trim, 1.525" OAL
    2054
    2038
    2026
    2048
    2011
    1963
    2026
    2036 avg, 91 ES, 29 Std dev

    30 Grain Varmint Grenade, VV 3N38 @ 6.9 grains, CCI 400 small rifle, 1.131" trim, 1.525" OAL
    2020
    2060
    2035
    2089
    2083
    2136
    2051
    2054
    2061 avg, 116 ES, 36 Std dev
    Other than the rogue 2136 shot, this load seemed to do very well with the 30g varmint grenade. At 6.9 grains, the discharge was louder than it was with the heavier bullets at 6.3 and 6.4 grains. Felt recoil was about the same.

    40 Grain Hornady V-Max, VV 3N38 @ 6.2 grains, CCI 400 small rifle, 1.131" trim, 1.580" OAL
    1839
    1821
    1839
    1844
    1799
    1821
    1831
    1864
    1832 avg, 65 ES, 19 Std dev

    40 Grain Hornady V-Max, VV 3N38 @ 6.3 grains, CCI 400 small rifle, 1.131" trim, 1.580" OAL
    1844
    1834
    1846
    1841 avg, 12 ES, 6.4 Std dev
    I had a 4032 reading on this string and went to delete it, but ended up deleting the entire string, so I'm missing a few numbers from it.

    40 Grain Hornady V-Max, VV 3N38 @ 6.4 grains, CCI 400 small rifle, 1.131" trim, 1.580" OAL
    1883
    1875
    1875
    1836
    1870
    1867 avg, 47 ES, 18 Std dev
    6.4 of Hornady seemed to do well. A good 5.7 choice obviously, since this is what is factory loaded.

    40 Grain Nosler Ballistic Tip, VV 3N38 @ 6.3 grains, CCI 400 small rifle, 1.131" trim, 1.580" OAL
    1811
    1836
    1846
    1844
    1834 avg, 35 ES, 16 Std dev
    This was a retest, using the same load I developed from before. Roughly the same average velocity and spread, which I'm happy with. Nosler is extremely reliable for this caliber.

  7. #56
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    30 Grain Varmint Grenade, VV 3N38, 6.9 gr, CCI 400, 1.525" OAL, LFC
    2129
    2140
    2123
    2160
    2150
    2140 avg, 37 ES, 15 Std

    Added a Lee Factory Crimp to my 30 grain Varmint Grenades and they were screaming fast. Broker the 2100 mark easy. These just might be my favorite load. Let me test them against the 35 grain NTX with the crimp to verify.

  8. #57
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    OK, so I guess I'll share my new pet load for the 5.7 I've been toying with it for the last couple of weeks I dont have any velocity data, my new chronograph is on its way any luck and I can get some numbers next weekend. so far I have just been working on making sure the action cycles and the little critters actually make it out the end of the barrel. And I just have a feeling that I am going to catch some static from someone on my choice of powders for it, but here I go anyway. Also im just hitting the high points, I was actually being very careful, I was stepping it up about .2 grains at a time, all the time looking for signs of over pressure, the large charge jumps you see are just milestones where things change.

    Firearm AR57

    Bullet 40gr Hornady Vmax blue tip,

    Brass factory primed pull downs.

    Powder AR-comp

    Ok, the case will hold 10gr. right even with the case mouth so I started with a charge of 5 gr. DO NOT DO THIS. you will be using a cleaning rod to pound the slug the last 1/3 out of the barrel.

    6.5 gr gets out the end of the barrel and holding on a full silouhette target center mass at 50 yards it keyholes about 6-7 inches low. cycles the action reliably.

    7.5 stops keyholing at 50, only 2-3 inches low, good cycling, no felt recoil, wearing earmuffs, all I can hear is the buffer sliding back and forth in the tube. 0 primer flow

    8.5 on target at 50. buffer is still louder than the shot. 0 primer flow

    I loaded the last batch at 9.5 worked great still on target at 50 and the gunshot MAY have been as loud as dropping a high school textbook on a counter. no felt recoil. and again no idea how fast they were. and still no primer flow, the shoulder doesnt even look like it moved at all.


    The one really good thing about this load is that it fills the case, if nothing else it would be a good starter load for those with limited loading experiance but want reliable short-mid range plinkers at a reasonable cost.

    Hope someone finds this interesting/useful/informative.
    Last edited by AR57; 03-12-2017 at 05:28 PM.

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