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Recoil spring trouble

Discussion in 'General Competition' started by November Sunrise, Sep 17, 2012.

  1. I recently changed from the 147 gr to the 124 gr FMJ bullet for my G34. I am having trouble with the gun not coming to slide lock when the mag is empty. I tried my other G34 and the results were the same. I am shooting 4.1 G of TG under a 124 Gr precision Delta FMJ at 1.150 OAL.
    Question... Am i under powered with the load or do i need a lighter recoil spring? If a new spring is in order, do you have a suggestion as to which poundage i should change to . I currently have the stock / factory one installed.
  2. Alexd29

    Alexd29 Go Bucks!

    Jul 3, 2011
    Dayton, OH
    you can try a.couple of things. either add .1 more powder, shorten OAL to 1.14, ot change your Rsa. Most people run a 14 lb Wolff, or a 13lb ISMI.
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  3. sciolist


    Nov 11, 2009
    The main issue here is balancing power and recoil spring so the gun runs well (subjective) and reliably (objective). What kind of power are you making with the TG, and how consistent is your ammo?

    My opinion is that the OE spring is way too much for a match pistol. I use the Wolff #14 on a Wolff rod, and my ammo is ~130-132PF.

    Set your OAL on the basis of function, not power. I load all my 9mm to 1.125x0.375.

    Of course there are reasons other than low power that the slide might not lock back.
  4. waktasz

    waktasz Gamer Scumbag

    Aug 10, 2002
    Philly Area
    13 pound ISMI...possibly with a coil or two cut off if you are running all the way down to 125 power factor.
  5. I just ordered a 13# spring from Lone Wolf. I should have it in a couple days . Ill report back and let you know what happens.