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Reloading Berger Bullets

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who polishes inside of thier necks?

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  #1  
Unread 05-18-2008, 07:30 AM
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who polishes inside of thier necks?

light bulblight bulblight bulbi once was visiting a fellow benchrest shooters home and saw him cleaning/polishing the inside of his case necks with steel wool wrapped around a bronze bore brush.never really thought about that untill the other day.i looked at the inside surface condition of my case necks under a microscope.interesting to say the least.they look like they were sandblasted with little tiny imperfections in the surface.so i chucked a old bronze brush in a drill wrapped some fine steel wool ariund it and polished the inside of a neck.checked again under microscope.smooth wall surface.now i see why this fellow was doing this,to get consistant bullet pull from each case from shot to shot.does any one else do this ?jasonlight bulb
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  •   #2  
    Unread 05-18-2008, 08:45 AM
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    IMHO pretty much a waste of time. The inside of my necks get polished by a certain extent by the mandrel that goes into the neck during turning operations.

    Doing that by hand only invites inconsistency, which is bad JUJU for accuracy.
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      #3  
    Unread 05-18-2008, 08:56 AM
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    Mandrels from turning can leave lots of ridges and burrs



    I polish the inside of the necks with steel wool but use a Lee Zip Trim, easier to get a tight fit on the steel wool and hold the case without hand fatigue



    By leaving a larger diameter of steel wool you can also take the burrs off the inside and outside neck chamfers.

    Does it make a difference? Who knows? I use the Lee Collet so I don't have any lube in the neck and the necks come out pretty clean

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      #4  
    Unread 05-18-2008, 10:41 AM
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    Many just manually run the brass over a brush, bronze or nylon, to knock out burned powder residue. Do what suits your needs.
    .
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      #5  
    Unread 05-18-2008, 10:45 AM
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    For my needs I just hit the necks w/ nylon brush in a drill motor.
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      #6  
    Unread 05-18-2008, 06:02 PM
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    I give them a good brushing. Seating resistance seems to be more uniform.
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      #7  
    Unread 05-19-2008, 02:22 PM
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    I just brush mine out.
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