Champfering primer pockets

Discussion in 'Handloading and Reloading' started by AJC1, Apr 12, 2021.

  1. AJC1

    AJC1 Member

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    S and b brass is just as terrible in 357 as it is in 38. I smashed 3 out of 100 primers the last time I tried to prime some. Planning on using a drill bit to very lightly by hand chamfer the primer hole. Is there a more obvious choice or better way. I could use a countersink.
     
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  2. db_tanker

    db_tanker Member

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    mouth neck deburring tool works fairly well for most of my primer pockets. and I feel your pain with S&B brass...I've crushed a few primers working with my 6.5 Swede and 7.5 Swiss brass from S&B.
     
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  3. Jonny2guns

    Jonny2guns Member

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    They actually make a tool for that, and so far it works better than the other things I have tried, including the countersink. Must have something to do with the angle of the cutting edge.
     
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  4. JJFitch

    JJFitch Member

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    This might help. There are also tools for removing crimp and reforming at the same time!

    Brownell's
    100-012-028WB
    Small Primer Pocket Uniformer

    Smiles,
     
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  5. Jonny2guns

    Jonny2guns Member

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    I bought the Hornady lock and load case prep. a absolutely love it. It's $129, but they make a manual tool for $29 that works just as good, just a little slower.
     
  6. Mark_Mark

    Mark_Mark Member

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    anybody know it these are any good?

    A6AB52FA-265C-4E1C-A021-BE1B40347691.jpeg
     
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  7. Jonny2guns

    Jonny2guns Member

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    Screenshot_20210412-204944.png
    I have one each of large and small pocket, but I think the hand held chamfer tool works better.
     
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  8. AJC1

    AJC1 Member

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    Mine is a vld style think that makes any difference.
     
  9. Mark_Mark

    Mark_Mark Member

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    I used that hand held tool... It don’t work that well. Mabey I’m not putting enough pressure on it
     
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  10. mkl

    mkl Member

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    These are a little pricey, but they work great. I had a bunch of 30-30 Winchester brand new cases that had primer pockets so tight I was crushing every other primer.

    Chucked this tool up in the drill press at about 500 rpm and it took out a ton of brass form the new cases. Result was a perfect fit for all the primers. Bad QC at Winchester, but this tool will fix it as well as taking out crimps on GI brass.

    https://www.brownells.com/reloading/case-preparation/primer-pocket-tools/uniformers/carbide-primer-pocket-uniformers-prod34720.aspx

    Sinclair sells a manual holder if you don't have a drill press or a 3/8 inch hand drill.
     
    Last edited: Apr 12, 2021
  11. Walkalong

    Walkalong Moderator Staff Member

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    Primer pocket uniformers just square up he bottom of the pocket and take it hair deeper if it is not deep enough.

    A slight twist of a deburring tool will chamfer the entrance to the primer pocket, don't over do it.

    What kind of priming are folks using that are having trouble with seating primers in S&B brass? I've never had trouble with it using hand primers.
     
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  12. AJC1

    AJC1 Member

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    Because really what type of y chromosome toating humanoid doesn't have a drill press.
     
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  13. Walkalong

    Walkalong Moderator Staff Member

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    A lot of them. ;)
     
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  14. AJC1

    AJC1 Member

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    Rcb
    Rcbs universal. Works great.
     
  15. Blue68f100

    Blue68f100 Member

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    I just threw a large lot of 357 sig brass into the scrap pile where someone got carried away with a cutter. These were range pickup. Primers had blown on 30% and the ones that did not blow looked like top hats. I estimated they removed 20% if the primer pocket.

    Use a proper tool. I prefer to swage the pockets since it does not remove material and moves it back to where it came from.
     
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  16. Doindia

    Doindia Member

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    There’s lots of cheap tools that will get the job done, I bought the Lyman case prep xpress and haven’t looked back. I would buy it 100x over. I remove the primer pocket crimp, clean primer pockets, trim brass, chamfer and debur all on that station. I think I paid like 120 for it and I’m sure it’s even more now, so it’s a pricey option but makes it all very easy.


    0A896391-0E3B-4966-9CFE-6282D908574F.jpeg
     
  17. Hartkopf

    Hartkopf Member

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    I use a 45dg counter sink because I happen to have one. A 41dg cutter would probably work even better.

    S&B brass might have changed lately. Two years ago I had no problems starting 45ACP primers but the pockets were shallow. Lately in 44 Mag and 9mm I can’t get primers started without chamfering but the depth is fine.


    One thing is for sure with reloading, it’s always something!:confused::mad::D Still better than a day at work though. :thumbup:
     
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  18. HDMontana

    HDMontana Member

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    I have one of these as well. It's a nice unit.
     
  19. cfullgraf

    cfullgraf Member

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    Frequently, I use a chamfer tool to remove the crimp from the primer pocket. It works reasonably well.

    I do not make any efforts to uniform the primer pockets of brass that did not have crimped primers.

    The chamfer does make the primers a bit easer to seat as there is a "funnel" to direct the primer into the pocket. I have not seen any adverse consequences from the chamfer.
     
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  20. koni

    koni Member

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    I just loaded 100 new Norma 6.5 CM cases and smashed 2 primers before I used my new to me Lyman case prep center with the large pocket reamer.
     
  21. Otto

    Otto Member

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    In the past year, Ive loaded thousands of S&B 9mm using various brands of primers without any problems related to pockets.
    The cases I’m using are dated ‘17, ‘18 and ‘19.
     
  22. FROGO207

    FROGO207 Member

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    I will separate it in the beginning and when I get a batch I run it through the CH4D primer pocket swager. It rounds and opens up the primer pocket. This is a one time deal just like getting rid of a swage ring. I like it as no metal is removed from the primer pocket.
     
  23. Akula69
    • Contributing Member

    Akula69 Contributing Member

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    I use the chamfer bit of the FA Platinum Case Prep center. It works well (if you don't get too much in a hurry) and makes a nice 'funnel' for the primer to be guided in.
    I bought the RCBS swager die but can't get it to work properly (center pin will not fit through the mouth of the cartridge).
     
    Last edited: Apr 13, 2021
  24. edwardware

    edwardware Member

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    It does. A VLD chamfer tool won't reach the pocket mouth. A conventional will, or use a countersink.
     
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  25. Walkalong

    Walkalong Moderator Staff Member

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    Mine works OK, but I prefer the one that takes shell holders. Probably just me, but cases pop out of it now and then.
     
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