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Can only fit 7 shells in 8 shot 590

Discussion in 'Tactical Shotguns' started by aliasneo07, Feb 7, 2013.

  1. aliasneo07

    aliasneo07

    166
    0
    Nov 2, 2009
    Annapolis, MD
    All,

    Buddy bought a Mossberg 590 yesterday. It is the 8 shot model. Immediately, upon recommendations of others, the standard mag spring was swapped with the Wolff extra power spring. We loaded it tonight to check for function and could only fit 7 rounds in the gun. Could almost get the 8th in, but not quite.

    Is this a hit you have to take with the Wolff spring, or is something else the issue?

    All shells are 2-3/4. 6 were Remington 00BK and 2 were Winchester rifled slugs.

    Perhaps it is an issue of the magazine spring cap being pushed too low?

    I don't know, but I'm concerned.

    Thanks
     

  2. aliasneo07

    aliasneo07

    166
    0
    Nov 2, 2009
    Annapolis, MD
    I didn't think those were high brass...

    You mean it only fits 7 b/c of spring or b/c of mag tube? I swear people load 8 00BK all the time.
     
  3. concretefuzzynuts

    concretefuzzynuts Brew Crew

    7,475
    13
    Dec 27, 2011
    PNW
    What I'm saying, and I may be wrong, some shells are 1/16 or 1/8 longer than others. Add 1/16 X 7 shells and you have an extra 7/16". Just enough to not allow that 8th shell.
     
  4. concretefuzzynuts

    concretefuzzynuts Brew Crew

    7,475
    13
    Dec 27, 2011
    PNW
    I have had shells that were listed as 2 3/4 that measured 1/16 to 1/8 longer than each other.

    But I could be wrong in regards to your gun.

    It was impossible to get that last shell in.
     
    Last edited: Feb 8, 2013
  5. white cloud

    white cloud

    1
    0
    Nov 26, 2012
    my 590 holds eight 2-3/4s just fine. you might try pulling the mag spring retainer, spring and follower out and have a look around.
     
  6. JimBianchi

    JimBianchi Da Da CLM

    6,284
    363
    Feb 15, 2006
    Las Vegas
    Mine did the same so I cut two links off of the spring to get 8rds. (I needed less than 1/2 an inch to get the finally round in)

    The shorter spring made it unreliable feeding the last round.

    I bought a wolff replacement spring and learn to live with 7rds.
     
  7. WoodenPlank

    WoodenPlank Who?

    7,958
    3
    May 15, 2010
    NW Florida
    It's the Wolff spring. My 590 fit 8 just fine until I installed the Wolff spring. I removed the retaining cap, reinstalled the spring and end cap (the thread-on part), and it now holds 8 with just a hair to spare. It also feeds even the last round in the tube with authority. The only catch is it makes takedown slightly more complicated.
     
    Last edited: Feb 7, 2013
  8. Big Bird

    Big Bird NRA Life Member

    9,570
    1,034
    Aug 7, 2003
    Louisville KY
    2 3/4" shotgun shells are ~2.5" long. Don't take my word for it...use a ruler you lazy slug. A 2 3/4" shell is the specified max length of the FIRED hull.

    You will find tremendous variation in factory shotshell lengths even among different loadings from the same manufacturer. Again, don't take my word for it but stand up a bunch of different 2 3/4" shells from different manufacturers next to each other.

    In my Mossberg 590 the only 2 3/4" shells that allow me to load 8 shells are the Winchester Ranger loads. Federals tend to be on the longish side.

    These are all factory 2 3/4" loads--notice the visible difference in length...

    [​IMG]
     
  9. Bren

    Bren NRA Life Member

    41,626
    8,293
    Jan 16, 2005
    Kentucky
    If it was me, I'd load 7 and not overcompress the mag spring. I normally put a choate mag follower in my shotguns, that eliminates 1 round from the magazine, anyhow.
     
  10. WoodenPlank

    WoodenPlank Who?

    7,958
    3
    May 15, 2010
    NW Florida
    Yep, I ran into that issue in the past with Fiocchi shotshells, as they use an end-cap instead of a traditional crimp, so the loaded shells were longer.

    I haven't run into any issues with Federal or Remington, though. Before I installed the Wolff spring, I could easily fit 8 rounds of Remington LR 00 or Federal LR #1 into the tube. I only ran into issues after installing the Wolff spring, but pulling the internal retaining cap fixed that problem.
     
  11. burttrans

    burttrans

    400
    1
    Aug 17, 2012
    I loaded 8 of Wal Mart cheap stuff and high brass buck shot and slugs and no issues getting 8 in and 1 in chamber.
     
  12. gooffeyguy

    gooffeyguy

    2,377
    443
    Jan 13, 2013
    St. Louis, MO
    +1

    An aftermarket mag follower will usually take up more space in the tube than the stock stamped steel one
     
  13. dling

    dling

    176
    0
    Oct 21, 2006
    Fountain Hills, AZ
    +2; same with my 590, it is the actual length of the shell not the package designation.
     
  14. aliasneo07

    aliasneo07

    166
    0
    Nov 2, 2009
    Annapolis, MD
    Pulling the internal retaining cap like...you removed it completely? I didn't know that was ok.
     
  15. WoodenPlank

    WoodenPlank Who?

    7,958
    3
    May 15, 2010
    NW Florida
    Yep, took it out. The "nipple" on the actual screw-on nut gives the extra quarter inch or so needed to fit the last shell in. The spring isn't any more compressed than it was before, it just has slightly more space to fit into. I can't see any reason why this would cause any function issues, you just have to be more careful when disassembling the shotgun.

    As far as I know, the stamped steel retaining cap is just there to hold the spring in when you remove the end cap. So long as you unload the tube first, and carefully let off the cap, you should be fine.
     
  16. megawatt

    megawatt Electron maker

    144
    5
    Feb 2, 2011
    Las Vegas
    My bet is on the ammo being the issue. All of these shells are the same size category 2-3/4"

    [​IMG]