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Crimped Military Brass

Discussion in '.223 Remington/5.56 NATO' started by carbinemike, Mar 8, 2014.

  1. carbinemike

    carbinemike Global Moderator Staff Member Global Moderator "Philanthropist"

    Messages:
    6,021
    I picked up a bag of 500 5.56 shells at a gun show today that all have crimped primers. What's the best way to remove the material used for the crimp? Can I use a 90 degree counter sink tool? I assume I want to be careful to not remove to much material and weaken that corner.
    meanstreak likes this.
  2. oli700

    oli700 12g Supporter "Philanthropist"

    Messages:
    9,270
    I am not actually sure of the most proper way but I just run them through like the rest. They are notably tougher but I haven't bent a decaper yet.....might just be lucky and I really haven't done a crap load of them. I also notice not all crimps are the same
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  3. nitesite

    nitesite Sheepdog Moderator "Philanthropist"

    Messages:
    5,757
    Well, there is this RCBS swaging die to get the crimp by using the tool on your press
    http://www.midwayusa.com/product/235832/rcbs-primer-pocket-swager-combo-2?cm_vc=ProductFinding

    Pretty expensive but a wonderful bench mounted swaging tool
    http://www.midwayusa.com/product/319662/rcbs-bench-mounted-primer-pocket-swager?cm_vc=ProductFinding

    This works by hand twisting and slightly cutting the primer crimp but doesn't remove too much
    http://www.midwayusa.com/product/501588/hornady-primer-pocket-reamer-tool-small
    These also work by hand twistng and you need one of these for the case mouth anyway
    http://www.midwayusa.com/product/36...ng-tool-17-to-45-caliber?cm_vc=ProductFinding
    http://www.midwayusa.com/product/46...ng-tool-17-to-60-caliber?cm_vc=ProductFinding
    This twists but either by hand or on a powered drill
    http://www.midwayusa.com/product/28...ng-tool-22-to-45-caliber?cm_vc=ProductFinding

    Some folks use a drill bit in a press and just let the bit barely kiss the primer pocket opening to cut the crimp
    meanstreak and oli700 like this.
  4. nitesite

    nitesite Sheepdog Moderator "Philanthropist"

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    5,757
    meanstreak and oli700 like this.
  5. carbinemike

    carbinemike Global Moderator Staff Member Global Moderator "Philanthropist"

    Messages:
    6,021
    Thanks for the responses guys. I had looked for something like the blog but hadn't come up with anything that good. I did see the one tool on Midway and that's what made think about using a 90 degree counter sink machine tool. In looking closer at the tools, they look more like a 60 degree tapered cutting edge which I think would be less likely to remove to much material. I'll probably get one that can be used by hand drill press.

    I did pretty good getting the primers out and didn't damage the decapper. I did break one on my first go around with .223/5.56. One of the ones I found at the range had about 1/4" of dirt in the bottom that was dried up like a rock and I didn't see it. The decapper nut was to tight and it snapped it. For the price I picked up an extra decapper for each caliber I have a tool set for.
    meanstreak likes this.
  6. hombre243

    hombre243 .30-06 Elite Member

    Messages:
    1,080
    Rcbs makes the slickest pocket swager. Reasonable priced and no material is removed, so no guessing. It screws into a press like a die and has other parts that go along with the tool. One thing you need in order to make it work easy is a piece of copper tube. Check out the process on you tube:

    https://www.youtube.com/results?search_query=rcbs primer pocket swager combo 2
    meanstreak likes this.
  7. dieselmudder

    dieselmudder .30-06 Elite Member "Philanthropist"

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    2,197
    110% agreed. I like it much better than reams.

    Sent from my SM-J727V using Tapatalk
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  8. hombre243

    hombre243 .30-06 Elite Member

    Messages:
    1,080
    It is just like resizing...one yank of the handle. The hand reamer wears out your hand and is a ticket to carpal tunnel. I have the Lyman prep machine with 6-7 stations. It wears you out too because you have to grip the case tightly so it does not spin in the hand. I use it to trim the flash hole inside. I also ream sometimes, uniform depth and diameter of primer pockets.. It also has bits to chamfer inside and outside of case necks so the bullet aligns without catching.

    But the RCBS Swage tool does that job faster and easier than any other method I have tried. 5 thumbs
    meanstreak likes this.
  9. Eddie Stewart

    Eddie Stewart .22LR

    Messages:
    18
    I just swaged over 500 primer pockets on military 5.56 in less than an our with the RCBS primer pocket swaging die setup. It works great and it doesn't remove brass, so no concern about pockets being reamed to much.
    nitesite, carbinemike and hombre243 like this.
  10. hombre243

    hombre243 .30-06 Elite Member

    Messages:
    1,080
    Another thing to consider...if you have to remove a crimp on a brass case, you always know it IS only once fired.
    nitesite and carbinemike like this.
  11. nitesite

    nitesite Sheepdog Moderator "Philanthropist"

    Messages:
    5,757
    Very good point hombre. Good post!
    hombre243 likes this.

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