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new run 642 NL owners.....question

Discussion in 'Handguns: Revolvers' started by Rmart30, Aug 6, 2008.

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  1. Rmart30

    Rmart30 Member

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    I was admiring my new NL 642 and happened to look at the barrel muzzle on it...
    Mine actually instead of looking round, it looks almost 5 sided.... Looks like the way the rifling was machined in caused it.. is it just mine or has anyone else noticed this?
     
  2. Gary A

    Gary A Member

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    If I "see" the picture correctly, normal.
     
  3. Rmart30

    Rmart30 Member

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    after some digging Im assuming it is what they call polygon rifling and is normal.
     
  4. azredhawk44

    azredhawk44 Member

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    Interesting... I'm picking up one of these today.

    Are 642's usually polygonally rifled? I don't think I've heard of a revolver with polygonal rifling since lots of wheelgun shooters tend to use lead bullets.
     
  5. BoneDigger

    BoneDigger Member

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    This was discussed about a year ago on either THR or TFL, can't remember which one. A guy posted pics of his 642 and said that it looked 5 sides rather than round. After a l.ot of debate, it was determined that this is perfectly normal. So, try it out and if it shoots well, then don't worry about it.

    Todd
     
  6. Gary A

    Gary A Member

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    Although it may look 5-sided, I believe polygonal rifling refers more to the replacement of lands and grooves with more rounded hills and valleys in a pattern ranging from hexagonal to octagonal. I'm not sure how many lands and grooves the J-frame has.
     
  7. Titus

    Titus Member

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    This has come up here and elsewhere. Here is one thread. I go with the "optical illusion" explanation. I think you'll find most of the cases of this are based on looking at rather than shooting results.

    Here's the wiki entry on polygonal rifling.
     
  8. welldoya

    welldoya Member

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    I picked up the same gun a few days ago and noticed it at the gunshop. No worries. It's my understanding that it's normal.
     
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