Rotary bolt design?

Discussion in 'Shotguns' started by Slugs Away, Feb 6, 2016.

  1. Slugs Away

    Slugs Away AH Veteran

    Joined:
    Jan 22, 2016
    Messages:
    145
    Likes Received:
    49
    Location:
    In my tent, BC Canada
    I have noticed that winchester and benelli are using a rotary bolt design on there pump action shotguns, just curious for your opinions on the rotary design.

    Thank you.
     

  2. ZG47

    ZG47 AH Enthusiast

    Joined:
    Jan 20, 2015
    Messages:
    420
    Likes Received:
    231
    Location:
    Wellington, New Zealand
    Member of:
    NZDA, NZMSC
    Hunted:
    New Zealand
    If a breech-block rotates about the bore axis to lock or unlock, it is a breech-bolt (or bolt for short). If it does not rotate about the bore axis to lock or unlock, it is simply a breech-block. That being said ... a breech-bolt should, in theory, provide stronger locking and a degree of camming action, both of which could be useful with high pressure goose-hunting or slug loads. I suspect that it is a simple matter of keeping the guns as idiot-proof as possible.

    My opinion, others may disagree.
     

  3. Slugs Away

    Slugs Away AH Veteran

    Joined:
    Jan 22, 2016
    Messages:
    145
    Likes Received:
    49
    Location:
    In my tent, BC Canada

  4. ZG47

    ZG47 AH Enthusiast

    Joined:
    Jan 20, 2015
    Messages:
    420
    Likes Received:
    231
    Location:
    Wellington, New Zealand
    Member of:
    NZDA, NZMSC
    Hunted:
    New Zealand
    Rotary bolt is a tautology. Mr Ruger may be the guilty party here, in that he described the unlocked breech-block on his 10/22 rifle as a [breech] bolt whereas that term can truthfully be applied only to ... a locking breech-block that rotates about the barrel axis, to lock and unlock.

    This is why the AR10 and AR15 have [breech] bolts sitting in [breech] bolt carriers; and the FN FAL , SLR L1A1/L1A2 with their tipping block actions, have breech-blocks, sitting in breech-block carriers.
     

  5. Slugs Away

    Slugs Away AH Veteran

    Joined:
    Jan 22, 2016
    Messages:
    145
    Likes Received:
    49
    Location:
    In my tent, BC Canada
    I see, excuse my ignorance. I had to wiki to find out the meaning of "tautology". Thanks for your replie.
     

  6. Longwalker

    Longwalker AH Enthusiast

    Joined:
    Apr 2, 2015
    Messages:
    453
    Video/Photo:
    27
    Likes Received:
    642
    Member of:
    Saskatchewan Wildlife Federation, Saskatchewan Trappers Association, Saskatoon Gun Dog Club
    Hunted:
    Canada ( Saskatchewan, British Columbia, Yukon) USA ( Montana) Germany, South Africa ( E.C)
    I have used Winchester 1200 shoguns with the rotating "bolt" - they worked reliably, with a little more resistance to the pump stroke than typical tip up locking mechanism like a Rem 870 or Ithaca 37. I prefer the latter design, - shorter stroke, a tiny bit quicker and a little easier to operate. But the Winchester design is strong and was perfectly acceptable to me.
     

  7. Slugs Away

    Slugs Away AH Veteran

    Joined:
    Jan 22, 2016
    Messages:
    145
    Likes Received:
    49
    Location:
    In my tent, BC Canada
    Thanks Longwalker
    I think l will stick with my mossberg.
     

  8. lcq

    lcq AH Elite

    Joined:
    Nov 30, 2013
    Messages:
    1,494
    Video/Photo:
    10
    Likes Received:
    1,197
    Member of:
    NRA CSSA
    Hunted:
    Canada, RSA
    I truly dislike getting brutalized buy a 3 1/2" magnum so I buy autoloaders for hunting and pumps for IDPA
     

  9. ZG47

    ZG47 AH Enthusiast

    Joined:
    Jan 20, 2015
    Messages:
    420
    Likes Received:
    231
    Location:
    Wellington, New Zealand
    Member of:
    NZDA, NZMSC
    Hunted:
    New Zealand
    Nothing wrong with a Mossberg pump-action, good piece of kit.
     
    Slugs Away likes this.

  10. Slugs Away

    Slugs Away AH Veteran

    Joined:
    Jan 22, 2016
    Messages:
    145
    Likes Received:
    49
    Location:
    In my tent, BC Canada
    Mossberg actions are pure genius.
     

  11. BigJohnx13

    BigJohnx13 AH Veteran

    Joined:
    Jul 18, 2013
    Messages:
    132
    Video/Photo:
    7
    Likes Received:
    167
    My earlier Winchester DEF 1300 also had a rotating bolt. But let me try and explain in laymans terms. The bolt/slide is a solid piece of metal that slides forwards and backwards but does not turn. On the front part of this bolt the head about 1/5 is a loose part that is rotating about a quater turn. So the bolt doesn't turn, but only the bolt head/face.

    The idea is to make extraction easier to pull backwards with a twist and more reliable loading using the same twist principle. During exercises in the army Berretta roit shotguns were prone to unloading/loading failures in the hands of a novice shooter. When shooting the Winchester there was less unloading/loading failures in the same exercise
     
    Slugs Away likes this.

Share This Page

 
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice