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Reloading Berger Bullets

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Bumping the shoulder

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  #1  
Unread 12-14-2005, 12:50 AM
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Join Date: Mar 2002
Location: Prince George British Columbia
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Bumping the shoulder

When bumping the shoulder with the Redding body die how do you measure the case to insure you have the .001-.002" bump?
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  •   #2  
    Unread 12-14-2005, 06:03 AM
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    Re: Bumping the shoulder

    It would be nice if you had a "widget". I always make one for my customers when I chamber a BR rifle for them. It is a peice of bbl. that I run the reamer in just enough to get the neck and shoulder part of the chamber. After de-capping a fired case you insert the case in the "widget" and measure with the calipers. Measure again after sizing to determine amount of "bump" I also face off the other end about .020" past the mouth of the neck for a quick visual length guage.
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      #3  
    Unread 12-14-2005, 07:09 AM
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    Re: Bumping the shoulder

    Redding makes a case mike for specific cartridges that will work for that cartridge only.

    Also you can use the stoney point headspace guage tool, www.sinclairintl.com part# HK-66 is a body and five bushings. $35.65 With the body and five bushings, you can measure any case.

    BH
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      #4  
    Unread 12-14-2005, 08:42 AM
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    Join Date: Nov 2005
    Location: Texas
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    Re: Bumping the shoulder

    [ QUOTE ]
    It would be nice if you had a "widget". I always make one for my customers when I chamber a BR rifle for them. It is a peice of bbl. that I run the reamer in just enough to get the neck and shoulder part of the chamber. After de-capping a fired case you insert the case in the "widget" and measure with the calipers. Measure again after sizing to determine amount of "bump" I also face off the other end about .020" past the mouth of the neck for a quick visual length guage.

    [/ QUOTE ]


    Yes this is what I do--removes any and all doubt!!!! The trick is to have the "widget" made when the barrel is installed!
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      #5  
    Unread 12-15-2005, 06:31 AM
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    Join Date: Nov 2005
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    Re: Bumping the shoulder

    It is nice to have the "Widget" made at the time of barreling but, not critical. If you have a cartridge with a 30 degree shoulder (or any other angle for that matter) you can set the compound at that angle and make a "Widget". It doesn't require a reamer.
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      #6  
    Unread 12-18-2005, 08:35 AM
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    Join Date: Feb 2002
    Location: Saginaw
    Posts: 80
    Re: Bumping the shoulder

    [ QUOTE ]
    It is nice to have the "Widget" made at the time of barreling but, not critical. If you have a cartridge with a 30 degree shoulder (or any other angle for that matter) you can set the compound at that angle and make a "Widget". It doesn't require a reamer.

    [/ QUOTE ]

    DocEd's got the right idea! I hold the size on mine so that when I measure a case I subtract 1" from the reading, it gives me the actual headspace measurement. I've made one for every cartridge I reload.
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