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Copper Peeling From Bullets During Seating?

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  #1  
Unread 09-17-2009, 07:06 PM
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Copper Peeling From Bullets During Seating?

On many of my handloads copper has flaked/scratched off the bullet during seating- it is deposited right on the mouth of the case. Am I doing something wrong? My gut says that the flakes are going to end up in my barrel or chamber and I am going to have a harder time cleaning, also this can not help accuracy. I have tried resizing with 2 different dies, though my finished case neck size is a little bit narrower than the books say it should be. what gives- is the brass shrinking back to a size much smaller than it should be?
Thanks.
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  •   #2  
    Unread 09-17-2009, 07:11 PM
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    Re: Copper Peeling From Bullets During Seating?

    Trout,

    Are you chamfering the inside of the case necks?

    Chris
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      #3  
    Unread 09-17-2009, 07:11 PM
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    Re: Copper Peeling From Bullets During Seating?

    Did you chamfer the case mouths?
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      #4  
    Unread 09-17-2009, 09:58 PM
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    Re: Copper Peeling From Bullets During Seating?

    Yes I chamfered but it is nickel plated brass so perhaps I did not use enough elbow grease?
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      #5  
    Unread 09-17-2009, 10:40 PM
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    Re: Copper Peeling From Bullets During Seating?

    Quote:
    Originally Posted by Troutslayer View Post
    but it is nickel plated brass
    Is it a flat base bullet? I ask because I had the same problem with my 357s before I seated my expander die slightly deeper; I was using nickel plated brass at that time.

    I just looked at midwayusa.com and they have some for high powered rifle calibers also... If that is applicable. You might have to crimp it slightly after seating it though.
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      #6  
    Unread 09-18-2009, 02:15 PM
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    Re: Copper Peeling From Bullets During Seating?

    I have had the same thing sometimes w/ boat tail bullets. I just ignore it (i do wipe off the little shavings) and shoot. I haven't noticed it causing accuracy issues but I'm not capable of shooting bug holes either.
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      #7  
    Unread 09-18-2009, 03:50 PM
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    Re: Copper Peeling From Bullets During Seating?

    I use one of these (or a similar VLD chamfering tool) to chamfer all my case mouths...end of bullet shaving problem.

    Case Mouth Chamfering - Sinclair VLD Chamfering Tool

    I even unscrew the bit from the handle and mount it in a drill press...then just gently press the case mouth straight up on the spinning bit for about 1/3 second. Easy as pie.
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