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Crown fashion

Discussion in 'Gunsmithing and Repairs' started by Iron Sight, Feb 9, 2020.

  1. Iron Sight

    Iron Sight Member

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    Can you fashion a crown to correct for point of impact?
     
  2. shooter1niner

    shooter1niner Member

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    No idea but probably be easier to make it shoot straight...
     
    SGW Gunsmith likes this.
  3. Catman42

    Catman42 Member

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    dont understand the question?
     
  4. skeeterfogger

    skeeterfogger Member

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    I have a walker that shot vert high right. The crown was flat but not dressed. I very carefully dressed it using a 1/2" multi faceted carbide ball file turning it reverse direction by hand. It now shoots about 4-5 high and on vertical inline at 25 yards which fits the sight in for it. So yes it can make some difference.
     
  5. Jackrabbit1957

    Jackrabbit1957 Member

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    That Walker most likely has a short Arbor, if the barrel and frame are not solid locked together the point of impact to point of sight can be affected. Messing with the crown unless you get lucky will likely hurt accuracy rather than help.
     
  6. Jackrabbit1957

    Jackrabbit1957 Member

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    Just re read the above post, missed the carbide ball, saw file only. As long as the crown is cut even there should be no problem with accuracy. Still need to check arbor length.
     
  7. earlthegoat2

    earlthegoat2 Member

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    What little I know about how crowns actually work, leads me to believe “fashioning” or “engineering” a non-standard one could only lead to highly unpredictable outcomes that would likely only be exacerbated with longer range shots.

    The idea of the crown is to provide a uniform escaping of gases from the muzzle behind the projectile as it exits. Any inconsistency in this, or what I would call asymmetrical turbulence, will cause any number things such as yawing or in extreme cases tumbling in mid flight. In any case, it could and probably would change your point of impact but accuracy would always suffer compared to a proper crown.

    My first question would be, What does the crown look like now? If f your crown is damaged, that could be your problem and a simple re crown would be in order. I would advise against trying to make a crown in any way but perfectly symmetrical and aligned to the bore and muzzle accordingly.
     
  8. Bwana John

    Bwana John Member

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    If you square the crown up and then bend the barrel it might.
     
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  9. Jackrabbit1957

    Jackrabbit1957 Member

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    I guess the next question is what gun are we talking about? Earlthegoat2 is right about having an even consistent crown as being the most accurate shooting. If it's lopsided or damaged it tends to kick the base of the bullet to one side as it exits the bore.
     
  10. Catman42

    Catman42 Member

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    the crown has to be perfect, ive cut many of them. my uberti walker shot right on but high, tight groups. i cant remember if i lowered the front sight with a honing stone or made the groove in the hammer deeper. im too tired to figure it out now. now she keeps a very tight group at 15 to 20 yards. very pleased with the gun. i have a conversion cylinder and shoot 45 long colts in it. its always cleaned and loaded. one of my go guns if someone tries to break in.
     
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