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Posted: 1/12/2012 5:27:39 AM EDT
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I'm trying to sort a LARGE amount of .223 brass. Can anyone describe, or better yet, supply pictures of what a crimped in primer looks like? I've got everything I need to deal with the situation, but it seems like a lot of wasted effort to put all of the brass thru the decrimping device (Dillon) if I don't need to. Any help greatly appreciated.
Bruce |
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Whether staked, or ringed, practically all .mil once-fired cases will have the primer crimped in. This is added assurance that the expanding primer pocket in the case head will not lose a spent primer down into the action during the ejection cycle and cause a jam. Jams can be a matter of life and death for the .mil users, so the extra attention is justified.
For commercial ammo sourced brass, (the common winchester, remington, etc.) the primer crimp ring is usually omitted, although that is not always the situation. I think Black Hills and Hornady and maybe others that produce the TAP spec. rounds will have a crimped in primer. 99.9% of reloaders do not bother to restore the primer crimp after it is swaged back out of the way. For swaged back crimps, an artifact of the cimp imprint will usually remain in the case head. |
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OK, now back to the original question. Can anyone describe or maybe supply pictures of a crimped in primer BEFORE the primer is decapped. I'm trying to sort mixed, pick-up, brass. Yes, I know there are lots of other issues with this brass, but for now, I am concerned with the primer situation.
Bruce |
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Quoted:
OK, now back to the original question. Can anyone describe or maybe supply pictures of a crimped in primer BEFORE the primer is decapped. I'm trying to sort mixed, pick-up, brass. Yes, I know there are lots of other issues with this brass, but for now, I am concerned with the primer situation. Bruce Before LC changed from the ring crimp to the staked crimp as in the LC '11 previous photograph, they used a ring crimp, as did other .mil suppliers. Here is a comparison photo. The crimped in primers are the two on the bottom. The non-crimped primers are the two on top. Notice the extra ring between primer cup perimeter and case on the bottom. Question, why are you sorting crimped from non-crimped? 
PS: Please notice on Orions photo above that one really cannot tell much at all without sufficient magnification. The crimp ring artifact is still there on the right, but close inspection shows that it is only an artifact and not the original crimp as shown on the left. |
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For reloading, you need a swaged pocket for the primer to go in. You need to remove the crimp before trying to reseat a new primer. I'm just trying to not run all the brass thru the de-crimping operation unnecessarily.
But I thought everyone already knew that... Bruce |
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