Small Ring On Base of .30-06 Brass

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Shooter2675

New member
I recently got a Hornady .30-06 Custom Grade die set and a hornady #1 shell. Holder. After I set the dies up, I sized and deprimed some .30-06 cases, PPU headstamp. When I inspected the bottom of the case (the head), I saw a small ring around the where the primer would go, and it is no more than 2 mm thick, from the primer pocket outward. It is almost a slightly different color, and if I run my nail across it, I can feel a small lip. I am afraid I might have ruined the brass. Any help would be appreciated.

Thanks,

John
 
I can't imagine what any resizing die/operation would do to the base of the case as you describe.
Can you upload a picture?


(ps: what case lube?)
 
Military cases have crimped-in primers. When you pushed out the old primer, you pushed some of that crimped material out with it raising a small burr. It must be removed to enable seating a new primer correctly. Swaging it out is correct method, but many just trim it out with a de-burring tool.

You obviously need reloading training - watching U-tube videos doesn't count as training.
 
I believe he meant the ring that was created during the roll-crimping operation, which is not always centered around the primer pocket.
 
Oldman,

I do not think they are military cases, as they are factory new. Thank you for your comment, but I do not appreciate your last sentence. Maybe I could learn a little more about reloading, I'm sure everyone could, but I don't like the way you told me to learn more about reloading.

What I meant by 2mm is the distance from the primer pocket outward towards the end of the case, the burr is not 2mm. It is maybe 0.1 mm or 0.01 mm, and can barely be felt. I will upload an image so you know what I mean.

Thanks,

John

You can see the ring going through "SPRG" on the case.

2c7961fda4570ff83a1e85e134c3d890.jpg
 
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burr is not 2mm. It is maybe 0.1 mm or 0.01 mm, and can barely be felt.
Click to expand...
Then it does sound like a "slightly-crimped" case material being pushed out along w/ the primer.

Chamfer it off/smooth and reload as normal.
Normal snug primer fit is the only real reqm't.

.
 
Yes, I fired these in my gun, and I inspected the cases before resizing them, and saw no such mark. I am really baffled. Could it be the shellholder?

Thanks,

John
 
After seeing the picture, please ignore all my previous comments.

Did the cases resize hard? Was extraction from the sizing die difficult?

I've had some rims pull off or displace when pulling cases out of die while using an incorrect lube. Now I use Imperial Sizing Wax - its the best.

I suspect this case may be damaged on a micro-structure level inside the rim. Check the corner under the rim for any visible cracks.

As for the comment about reloading training - I train lots of people HOW to reload covering topics not covered in any reloading manual or videos on U-tube. Lots of times I've had to re-train people who had gotten bad info from other sources. Don't take it wrong - all of us, me included, can learn from others when reloading practices are discussed freely.
 
Large rifle and small rifle are different diameters.

Large for 308/30-06 cases etc
Small for 223


NOTE: Reamer vs Uniformer
The reamers will clean up the circumference/edges of the pocket (and clean out a little of the fouling)
The uniformers will clean/cut the bottom of the pocket to a specific depth.
 
Based on the picture, that is not a primer crimp.

Yes, I fired these in my gun, and I inspected the cases before resizing them, and saw no such mark. I am really baffled. Could it be the shellholder?
Click to expand...

If you are sure the mark was not there before resizing, well, that's where your problem lies. Your op was unclear whether this happened on all the cases you resized or just the one in the picture. If just the one, I would scrap it and move on. If it is on all, I would figure this out. It should not be marking the brass like that. Check the shell holder closely for any deformity, tool mark or burr that could explain it. Use a magnifying glass. I assume it is clean since it is new, if not, clean it.
 
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