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Thread: Labradar 5.56 data 1168

  1. #71
    Join Date
    Aug 2017
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    Lowcountry, SC.
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    65*
    G19/PMM Barrel/Comp
    Blue 125 TC, Ginex primers, HS-6
    1.167” COL mixed brass

    6.0
    Av 1107
    Es 133
    Sd 39.8

    6.1
    Av 1125
    Es 61
    Sd 19.4

    6.2
    Av 1135
    Es 88
    Sd 30

    6.3
    Av 1160
    Es 62
    Sd 18.9

    6.4
    Av 1186
    Es 54
    Sd 21

    6.5
    Av 1212
    Es 66
    Sd 22.1

    6.6
    Av 1219
    Es 33
    Sd 9.6

    6.7
    Av 1230
    Es 88
    Sd 22.2

    This shit is loud as ****. All of it cycled, vigorously. I’d say most or all of it had a feel mimicking +p. Mind the COL if you’re thinking about reproducing this. I had a hard time capturing shots reliably because it really made me want to bang away faster than the chrono could keep up.
    Last edited by 1168; 01-08-23 at 19:17.

  2. #72
    Join Date
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    Mid-West, USA
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    Those loads ended solidly in +P territory, if I'm reading it correctly. I've used plenty of HS-6 for mild to standard velocities in 9mm and mild to full power loads in 38 Super. I always had good luck with it, though I was using it with jacketed bullets.
    Last edited by opngrnd; 01-08-23 at 19:54.

  3. #73
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    Quote Originally Posted by opngrnd View Post
    Those loads ended solidly in +P territory, if I'm reading it correctly. I've used plenty of HS-6 for mild to standard velocities in 9mm and mild to full power loads in 38 Super. I always had good luck with it, though I was using it with jacketed bullets.
    Thats a really good point. I’m using .355 powdercoated bullets. I got the charge weights from Speer, but my velocities are much higher than they got with plated and jacketed bullets. I seated them long because all of the published data seemed conservative, and I thought I might seek to venture a bit above published charge weights later, to mimic +p loads. But I got what I wanted without doing that.

    A friend of mine that was recording normally loads with TG, but occasionally 244 or CFE-P, and he was like “Did you just say 6.0-6.7?…. Are you sure?”

    Edit: for anyone wondering, this project is to economically drive the comp while mimicking +p recoil. Shoot me a PM to avoid cluttering the thread if you’d like more discussion on this topic.
    Last edited by 1168; 01-28-23 at 14:48.

  4. #74
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    81*F

    12.5” Hodge/Velos
    Federal XM855
    2819 fps
    39 es
    13.6 sd

    12.5” BCM Kino/Turbo k
    XM855
    2825 fps
    69 es
    20.3 sd

    12.5” Criterion Core/.264MG7k
    XM855
    2824 fps
    31 es
    9.5 sd

    69gr Norma .223
    2620 fps
    38 es
    11.1 sd

    These barrels are all pretty early in their lives, with the Hodge having the highest round count at like 1k or two.
    Last edited by 1168; 04-30-24 at 16:29.

  5. #75
    Join Date
    Sep 2007
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    22 (100%)
    Quote Originally Posted by 1168 View Post
    81*F

    12.5” Hodge/Velos
    Federal XM855
    2819 fps
    39 es
    13.6 sd

    12.5” BCM Kino/Turbo k
    XM855
    2825 fps
    69 es
    20.3 sd

    12.5” Criterion Core/.264MG7k
    XM855
    2824 fps
    31 es
    9.5 sd


    69gr Norma .223
    2620 fps
    38 es
    11.1 sd

    These barrels are all pretty early in their lives, with the Hodge having the highest round count at like 1k or two.
    Thanks for data dump, I hope this debunks a lot of the numbers being thrown around on TOS regarding the velocities of their 12.5 Criterions. Somehow people are getting into 2700's fps with mk262 clones and 3000 fps with XM193 and they are all using the new Garmin chrono. I would be highly suspect of the numbers coming out of their chronos from now on. Not to mention Garand Thumb was just using one to chrono the hybrid .227 fury and the numbers on that seem pretty fantastical.
    Forward Ascertainment Group

  6. #76
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    I just got a Garmin, and so far the numbers are comparable to a traditional chrono and a magnetospeed.

  7. #77
    Join Date
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    90*F
    13.5” Mos Tek 5.56 Mid
    Unsuppressed

    XM193 Fed
    Av 2970
    Es 80
    Sd 20.6

    XM855 Fed
    Av 2870
    Es 42
    Sd 12.9

    Norma 69
    Av 2651
    Es 41
    Sd 14
    RLTW

    “What’s New” button, but without GD: https://www.m4carbine.net/search.php...new&exclude=60 , courtesy of ST911.

    Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.

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