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930 action spring weight tech question

Discussion in 'Mossberg 930 Autoloader' started by John A., Sep 22, 2018.

  1. John A.

    John A. I'm "THAT" guy Staff Member Global Moderator Moderator

    I'm curious if anyone knows what the standard action spring weight is on the Mossberg 930?

    I have a(nother) 12 gauge that has what I feel is too weak of a spring. I have changed it to another that is about 3 pounds heavier and still seems to work properly, but I'm wondering how heavy I could go and still get full function with both low and hi brass.

    In short, I'm trying to track down the heaviest action spring available.
  2. Rob972

    Rob972 Copper BB

    Picking up a set of these:http://www.or3gun.com/OR3GUN/about_or3gun_plunger.htm from OR3Gun is a much better option. You can tweak your spring by adjusting compression with the retainer. If you think the current spring is weak, I would order a new stock-weight, and mount it with the OR3Gun parts, then tune it to suit your needs. You'll easily spend the same money on 3 spriongs as for the CSP, and you'll be stuck with springs you don't want, so...
    John A. likes this.

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