Primer pocket uniforming

Discussion in 'Handloading and Reloading' started by AJC1, Mar 3, 2021.

?

Do you uniform primer pockets

  1. Yes on every case

  2. Yes but only on match cases

  3. Yes but only on cases that give me problems

  4. No why waste my time

  5. What is primer pocket uniforming?

Results are only viewable after voting.
  1. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    I'm curious I never have.
     
    GeoDudeFlorida likes this.
  2. Akula69
    • Contributing Member

    Akula69 Contributing Member

    Joined:
    Oct 21, 2020
    Messages:
    95
    Location:
    The Armpit of this Country
    The LC .223 cases I get are swaged in the primer pocket, so I use the deburr tool on my case prep machine to gently cut it out.
     
  3. ballman6711

    ballman6711 Member

    Joined:
    Jul 20, 2019
    Messages:
    381
    I only load handgun cartridges and try to use same headstamp brass, so I figure the primer pockets should be fairly uniform already. Besides, I don't think I would notice (or could shoot) the difference if I did uniform them.

    chris
     
  4. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    67,007
    Location:
    Alabama
    Only for match rounds, uniform them, then use the uniformer to clean them after each firing.
    K&M Large Rilfe Primer Pocket Uniformer.JPG
     
    earlthegoat2 likes this.
  5. horseman1

    horseman1 Member

    Joined:
    Mar 26, 2013
    Messages:
    445
    Location:
    Colorado
    I use the RCBS version, but only to clean them out and to make sure the crimp was removed properly. Very useful to me for that pupose. I guess my vote should be for every case, but I dont shoot well enough for it to matter, so I dont want to skew your poll.
     
  6. scotty

    scotty Member

    Joined:
    Dec 18, 2003
    Messages:
    147
    Location:
    california
    As Walkalong said, I use a uniformer on the cases that I expect a lot of accuracy from. I have a .223 and a .308 that will shoot very nicely if I do the proper prep. I have tried uniformed cases on other rifles, but can't say if it has improved accuracy or not. On handgun cases, I haven't even tried.
     
  7. Ifishsum

    Ifishsum Member

    Joined:
    Jun 21, 2005
    Messages:
    1,087
    Location:
    Portland, OR
    I generally only uniform .30-06 cases I'm going to fire in the M1...primarily for avoiding possible slamfires. Although that tool does such a stellar job of cleaning primer pockets I've considered getting one sized for SR. Would not bother with any handgun rounds though
     
    GeoDudeFlorida and Walkalong like this.
  8. oldfortyfiveauto

    oldfortyfiveauto Member

    Joined:
    Mar 9, 2008
    Messages:
    430
    Seems to make loading any surplus military case much better.
     
  9. Grumulkin

    Grumulkin Member

    Joined:
    Dec 1, 2005
    Messages:
    2,986
    Location:
    Central Ohio
    I have uniformed multiple primer pockets but, having never seen any appreciable accuracy improvement, I no longer do it.
     
  10. TEXASJD
    • Contributing Member

    TEXASJD Contributing Member

    Joined:
    Feb 10, 2021
    Messages:
    284
    When I have a gun that will shoot (custom all my bolt guns are) I will start with new brass say 100p probably Lapua end up with 30p give are take after weighing them and checking run out and finding the high spots in the case. Then I will turn the necks uniform primer pockets and the flash holes, in most guns these little things won't show but with a rifle that will shoot sub 1/4" it makes a differance. The other thing I will say about it is in larger gas guns M1A AR-10 M1 it can be a safty concern helping to prevent a slam fire.
    https://www.americanrifleman.org/articles/2020/5/13/m1-garand-slam-fires-potential-causes-solutions
     
    horseman1 and AJC1 like this.
  11. old heeler

    old heeler Member

    Joined:
    Apr 16, 2016
    Messages:
    291
    Location:
    Colorado
    I use Whitetail Design & Engineering LTD Small/large Rifle Primer Pocket Uniformer.
     
  12. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    67,007
    Location:
    Alabama
    That’s old school, I have their SR uniformer.
     
  13. murf

    murf Member

    Joined:
    Nov 16, 2010
    Messages:
    5,076
    Location:
    arizona
    i uniform them all. anything to try and prevent flyers.

    murf
     
    AJC1 likes this.
  14. lightman

    lightman Member

    Joined:
    Feb 7, 2011
    Messages:
    2,219
    Location:
    england,ar
    I uniform all of mine. I have one of the Whitetail tools for large rifle and use a Sinclair tool for small rifle.
     
    AJC1 likes this.
  15. HOWARD J

    HOWARD J Member

    Joined:
    Mar 8, 2010
    Messages:
    2,564
    Location:
    S/E Michigan
    For military brass with crimps I use a RCBS trim mate tool to remove crimp & uniform primer pocket. I don't use on commercial brass.
     
  16. Archie

    Archie Member

    Joined:
    Dec 31, 2002
    Messages:
    3,042
    Location:
    Hastings, Nebraska - the Heartland!
    I do all the rifle brass, but prior to the first loading. The rifles I shoot are not match rifles, so it probably do much, but I seem to be OCD about it.

    I clean handgun cases, but not uniform them.
     
  17. mdi

    mdi Member

    Joined:
    Dec 31, 2007
    Messages:
    3,867
    Location:
    Orygun!
    I have removed military primer crimps, but never "uniformed" any. Not even on my 308 Win. "Accurate Loads" which give me 7/8" groups @100 even with LC brass...

    Edit; I remove primer crimps with a 60 degree x 1/2" countersink. I have decrimped many, many cases since about '90, handgun, rifle, foreign and domestic. Never "uniformed" nor "swaged" any primer pockets for any of the 12 calibers I reload...
     
    Last edited: Mar 5, 2021
    AJC1 likes this.
  18. old heeler

    old heeler Member

    Joined:
    Apr 16, 2016
    Messages:
    291
    Location:
    Colorado
    When you get to be 79 old stuff looks pretty good!
     
    Walkalong likes this.
  19. Bcwitt

    Bcwitt Member

    Joined:
    Dec 22, 2020
    Messages:
    158
    I have done it, but was not able to discern any benefits.
     
    mdi likes this.
  20. Klaatu Barada Nikto
    • Contributing Member

    Klaatu Barada Nikto Contributing Member

    Joined:
    Dec 10, 2020
    Messages:
    301
    Location:
    Greenville, SC
    Yes after I swage all 5.56 and LC 223 brass. No for pistol brass unless it's really nasty range brass that was tumbled with spent primers still in.
    BTW, thanks to the OP for bringing this up, I thought I was the only one having issues with LC 223 brass.
     
  21. GravelRider

    GravelRider Member

    Joined:
    Mar 14, 2010
    Messages:
    73
    Location:
    Pennsylvania
  22. Walkalong

    Walkalong Moderator Staff Member

    Joined:
    Nov 20, 2006
    Messages:
    67,007
    Location:
    Alabama
    I don't even clean those primer pockets
     
    mdi likes this.
  23. JCSC

    JCSC Member

    Joined:
    Jul 24, 2019
    Messages:
    186
    Location:
    Columbia SC
    I uniform the military crimped 556 cases. Bought and tried the RCBS swage tool for this operation and it is the biggest PITA I have ever used.

    after the first time I never touch them again.
     
  24. GeoDudeFlorida

    GeoDudeFlorida Member

    Joined:
    Dec 1, 2020
    Messages:
    1,737
    ^^^This. But, for all of my service-rifle loads, especially 7.62x54R and .303Brit. even though the headspace off the case rim. Service rifles tend to have very aggressive firing pins.
     
  25. AJC1

    AJC1 Member

    Joined:
    Jan 14, 2020
    Messages:
    2,793
    Location:
    Memphis
    Do you put mil spec primers in those uniformed pockets? Considering that for 7.7
     
    GeoDudeFlorida likes this.
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice