Shooting a live round in an M70 with the grenade sight up...
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    Shooting a live round in an M70 with the grenade sight up...

    Obviously without a launcher or grenade (practice or otherwise)!!!! I’m chasing accuracy dementors in my newly acquired M70AB1, and am trying to eliminate possibilities (like the barrel, in this scenario). Anyone ever done this or have an opinion regarding the idea?

    To elaborate, since the grenade sight blocks the gas tube, the rifle won’t cycle the next round into the chamber, so I will be manually feeding individual rounds as I check the barrel accuracy. The question is: will too much pressure develop in the barrel and screw up the gas port and/or grenade sight if I do this?

    Thanks!
    Last edited by Jabbo; 05-15-2019 at 03:55 PM.

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    No opinions or experience?
    Last edited by Jabbo; 05-15-2019 at 06:46 PM.

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    Sorry don't have a Yugo, can't help you. However, I don't think it would make a difference with a few rounds.

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    wouldn't changing or cutting off the gas flow automatically throw off your figures and your groups? I get that you're trying to eliminate variables, but under what circumstances will you be firing a live round with the sight ladder up? just trying to understand your reasoning aside from accuracy. If anything, ammo would be the variable that's more easily controlled. use different ammo and handload to shrink the groups.

    I don't think it'll hurt it for a few rounds, but sustained full pressure rounds might wiggle something loose. It was never designed for that. I'm fairly sure grenade launching blanks have reduced powder loads in them.
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    I've only done it (shut off the gas) a few times on a Yugo AK and SKS, I don't see it being a problem if any.


    Try elaborating on your "accuracey dementors" a bit. There are plenty of helpful members here.
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    J
    Quote Originally Posted by JeepFan View Post
    I've only done it (shut off the gas) a few times on a Yugo AK and SKS, I don't see it being a problem if any.


    Try elaborating on your "accuracey dementors" a bit. There are plenty of helpful members here.
    The front and rear sights are tight, the barrel specs out okay, I’ve reduced the forward pressure of the gas tube on the barrel (but haven’t shot the rifle since then), I’m using Roosky Wolf Polyformance ammo, and getting groups of maybe 3 feet at 100 yards! Jeez, I’m not looking for sub-minute of angle, but I’d like for the rifle to shoot 5-6 minutes of angle! I’ve checked the headspace and it’s good....

    Also, the cleaning rod was in the rifle when I shot it (not in the barrel, but in it’s proper place)...that’s a possible no-no....
    Last edited by Jabbo; 05-15-2019 at 08:22 PM.

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    Three foot groups at 100 would be frustrating.

    Just some thoughts, Try different brands of ammo. Try to reduce any human error, like shooting from a rest or at least bags. Also, not to be rude, maybe have a friend shoot it for comparison.
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    Buy better ammo. Wolf isn't very consistent. Granted it should not be 5ft @ 100 but at least get more consistent ammo.

    Cleaning rod wouldn't make a difference.

    Also is this a kit built on a used barrel?
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    Quote Originally Posted by JeepFan View Post
    Three foot groups at 100 would be frustrating.

    Just some thoughts, Try different brands of ammo. Try to reduce any human error, like shooting from a rest or at least bags. Also, not to be rude, maybe have a friend shoot it for comparison.
    I used bags-I can put 10 rounds of mil-surp 30-06 in an M1 rifle in a 1 inch circle at 100 yards on a good day...I ain’t got no friends in this podunk town . :-)

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    Quote Originally Posted by Arik View Post
    Buy better ammo. Wolf isn't very consistent. Granted it should not be 5ft @ 100 but at least get more consistent ammo.

    Cleaning rod wouldn't make a difference.

    Also is this a kit built on a used barrel?
    Yes...original Yugo barrel...but it specs okay...hence my OP....
    Last edited by Jabbo; 05-15-2019 at 08:48 PM.

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    How's the barrel crown?

    Sent from my E6833 using Tapatalk
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    Well, to check out the crown I had to unscrew that crappy floppy slant recoil diverter, and that crappy thing is no doubt the biggest source of my woe. Crown looks good. I feel like an idiot for not thinking about that crappy diverter. Thank you Sir!
    Last edited by Jabbo; 05-16-2019 at 12:46 PM.

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    I can't believe the slant brake is the problem. Don't have my Yugo anymore, but I never saw any problem like yours when I used to shoot it. (And I'm no Davy Crockett.) I'd try it from a rest, as suggested above.
    Last edited by Richard W.; 05-16-2019 at 01:26 PM.
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    Stop and think about it for a moment. Millions of AKs have slant brakes. Does it seem logical that the factories would develop and install a muzzle device that f’ed up its accuracy?
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    I’m no expert by any stretch,however 3ft. groups shouts bad barrel. Just my dos centavos.
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