Capacity differences between brands?

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    phx223

    phx223

    Member at Large
    Feb 15, 2010
    1,518
    West of MD, East of CA
    Three 18.5” home defense shot guns walk into a bar...

    Seriously though, why for a given barrel length are Remington 870’s only 6+1 while Mossberg and Benelli are 8+1?

    In looking at mag tubes that are flush with the 18.5” barrel how do mossberg and Benelli get 33% more rounds in?
     
    jrumann59

    jrumann59

    DILLIGAF
    MDS Supporter
    Feb 17, 2011
    14,024
    I do not have an 870 but I expect it to come down to magazine construction. My Mossberg gained a round when I went with a better spring and trimmed it 1/2" shorter but still within spec. Could be the follower, the mag tube could be dimensionally smaller even though it looks the same.
     
    INMY01TA

    INMY01TA

    Ultimate Member
    Dec 29, 2008
    5,830
    An 18.5" Mossberg is not 8+1. An 18.5" 590 with a 4.25" tube extension, bringing the tube flush with the barrel, holds 7+1 2-3/4" shells. The 20" 590 holds 8+1.
     
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