Rate Of Fire

Discussion in 'NFA Firearms & Related Items' started by Zigzag2, Feb 25, 2003.

  1. Zigzag2

    Zigzag2 Guest

    Tac401
    Administrator
    Posts: 253
    (3/15/01 9:17:51 pm)
    Reply | Edit | Del All Rate Of Fire
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    Any fellow full auto folks have any suggestions on how
    to slow down the rate of fire on a UZI in 45acp. caliber?

    Tac
    The Firearms Forum Vietnam Memories Bulletin Board sjdsports@hotmail.com

    Alphamale
    Senior Chief Moderator Staff
    Posts: 69
    (4/8/01 8:54:19 pm)
    Reply | Edit | Del Re: Rate Of Fire
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    Tac, just had a thought(which is dangerous when I do it b/c something usually gets broke and/or blown up), how about moving to a heavier recoil spring? Or handloading some light target loads with 185gr bullets?
    If guns are outlawed, can we use swords?

    Tac401
    Administrator
    Posts: 567
    (4/8/01 9:09:06 pm)
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    Re: Rate Of Fire
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    Alpha,

    I don't want to really use light loads, I still would
    like to use combat loads, there is a way to do it but
    it's a pain in the ass, I was thinking the same thing
    as you mentioned with a heavier recoil spring but it
    takes a different type spring than the semi auto gun
    does but I may try a modification to one of the original
    springs, if not I'll have Andrewski do it, he's about
    the best there is in class 2.

    I love it on 9mm but 45 is wicked fast when I switch
    over.

    Tac
    The Firearms Forum Vietnam Memories Bulletin Board Contact Administrator

    Tac401
    Administrator
    Posts: 925
    (5/13/01 5:10:04 pm)
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    Re: Rate Of Fire
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    well, my son Jonathan and myself recently took the
    UZI out for a test run of slowing down the 9mm rate
    of fire and one simple way that was effective was to
    use standard target ammo instead of Sub-Gun high
    pressure ammo.

    The target ammo seemed to slow it down to around 400rpm.
    and we were actually able to perform single and 3rd.
    burts while having the selector on Full Auto.

    We used 3 different brands of ammunition to run our
    test with, of the 3 brands we used American Ammunition
    CO. 115gr. FMJ, PMC-115gr. FMJ and UMC-115gr. FMJ.

    Out of the 3 brands tested 2 of them failed to perform,
    American Ammunition gave us 1 dud and 2 jams & PMC gave us 1 dud, the UMC ran flawlessly.

    Tac


    The Firearms Forum Vietnam Memories Bulletin Board Contact Administrator

    Mike 400
    Member
    Posts: 1
    (3/22/02 11:43:26 pm)
    Reply | Edit | Del How fast would you say the RPM is...
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    In the .45?

    cpermd
    Member
    Posts: 7
    (3/31/02 12:55:29 am)
    Reply | Edit | Del 2 ways
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    Increase spring strength
    Increase wt of bolt.
    Not much else in a 45 to do
    cpermd

    Tac401
    Administrator
    Posts: 4018
    (3/31/02 1:34:54 pm)
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    Re: 2 ways
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    No way to increase weight of bolt to my knowledge?
    The 9mm is fine where it's at, my main concern is
    to slow down the ROF of the.45acp, it's so fast
    that you can't really do a proper burst with it, I
    was wondering if as you suggested a little higher
    spring tension would do the trick, or maybe a custom
    heavier spring might work?
    TFF VMBB Email Tac

    cpermd
    Member
    Posts: 10
    (3/31/02 2:31:20 pm)
    Reply | Edit | Del Bolt
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    I have seen a bolt that had Mallory metal that auto machine shops use to balance crankshafts added to it.
    They milled 4 slots and then added the metal.
    cpermd

    Tac401
    Administrator
    Posts: 4024
    (3/31/02 5:08:31 pm)
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    Re: Bolt
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    If you find out who can do this for me or where
    please let me know.

    Thanks!
    TFF VMBB Email Tac

    cpermd
    Member
    Posts: 13
    (4/18/02 3:28:25 pm)
    Reply | Edit | Del Bolt wt
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    OK
    I have done some tracking.
    It was done by a shop in Springfield MO that balances cranks and does block work for AA and Top Fuel Dragters.
    The key is they balance crankshafts and use Mallory metal.
    Find a Racing engine shop that does cranks.
    cpermd

    Tac401
    Administrator
    Posts: 4174
    (4/18/02 5:27:22 pm)
    Reply | Edit | Del

    Re: Bolt wt
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    Thanks CP!
    TFF VMBB Email Tac
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