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Thread: What causes vertical stringing?

  1. #31
    Platoon Sgt GunnyG's Avatar
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    Re: What causes vertical stringing?

    Well, so much for that idea.
    There were a lot worse places than Phu Bai and they weren't all in Viet Nam.

    Member M14 Battle Rifle Club Advisory Committee

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  3. #32
    Moderator nf1e's Avatar
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    Re: What causes vertical stringing?

    Try it without the handguard and see what happens.
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  5. #33
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    Thanks nf1e that is on the list but first I will try the unitized gas assembly I ordered for it and checking dwell/OP rod contact as Ted mentioned.
    I asked Forceman to give me the most dwell he could so maybe I got what I asked for!
    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

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  7. #34
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    Update 03/11/23:

    Went out today and shot 15rds out of this rifle and did some checking on the gas piston/OP rod/Roller contact. Also got my unitized gas cly assembly to install Friday...
    Observations: I do think TED BROWN has it right. There is no contact between the OP rod/gas cyl/gas plug...
    Taking it apart was a bitch but have it all apart to install my unitized 'new' gas cyl assembly tomorrow and try to figure out how to deal with the handguard and setting the dwell to 10/15 thousands?
    What are your thoughts on dwell guys?
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    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
    Member M14 Battle Rifle Club
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  9. #35
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    Ok. My Jeep Gun 2.0 is back together to try again... Here is what I did today:

    Installed the Midway 'unitized' gas cly assembly
    Ground down my handguard so as not to touch the 'ears' on the band (tried to glue in a foam spacer; old glue will have to wait and see if it falls out)
    Set my gas cly assembly without a shim to where I think I should have around .015 thou of so off my bolt roller. (I have no way to measure)
    Distance between the gas plug/gas lock at point of slight contact measures .020 thou... Needed to tighten a bit more to get movement so called it good and moved on.
    Remounted my muzzle brake with levels and blue hi-temp locktite 262? What do you guys use?

    Pics of MY day:
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    Last edited by JEFFJP_N_JJ; 12th March 2023 at 09:33 PM.
    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
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  11. #36
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    more pics
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    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
    Member M14 Battle Rifle Club
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  13. #37
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    last pics
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    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
    Member M14 Battle Rifle Club
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  14. #38
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    Hi guys, took her out today and did some group and crono checking... I shot everything using my new Atlas bi-pod off of my old table using a rear bag.

    Groups did seem to group better but still have two groups that seem to show up in a 5rd string; am plenty happy with how my 'Jeep Gun 2.0' now shoots and will need to look for a decent 155/150gr load for her as I shoot Hornady 150gr GMX bullets for deer season. Jon Wolfe mod/std 22" barrel 1/11

    What I shot today:
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    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
    Member M14 Battle Rifle Club
    Lifetime member NRA
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  16. #39
    Sgt Major JEFFJP_N_JJ's Avatar
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    Re: What causes vertical stringing?

    Last one's
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    "In a time of drastic change, it is the learners who will inherit the future. The learned usually find themselves equipped to live in a world that no longer exists." - Eric Hoffer

    "Whenever you fall... Pick something up." - Oswald Every
    Member M14 Battle Rifle Club
    Lifetime member NRA
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  18. #40
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    Re: What causes vertical stringing?

    Those groups look good to me. Very Nice!!!!
    The Second Amendment

    A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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