Just curious, hoping for some answers.

This picture is of the first cases fired from a brand new SIG P-220 Carry model.



The cases on the left are factory Federal American Eagle, the cases on the right are factory Winchester. I have never seen this before. I have had the same results with reloaded Winchester cases that have been sized and trimmed to spec. All ammo is 230 gr. RN.

The second picture, (below),is of the 2 test fired (SIG) SPEER cases that came with the pistol.




I have a P-245, (brand new), and I have shot the same ammo through it, and I don't have this problem.

Has anybody seen this before? Any opinions?

Thanks in advance.

Positive extraction and positive ejection - that spins the case around 180 degrees and it hits the edge of the ejection port. Sometimes you can reduce this by adjusting the extractor but it really isn't a problem. I'd leave it alone.

I had a 1911 that used to do that. I fixed it by shortening the the ejector a little bit. I'm not familiar with the Sig but assume it's a similar fix.

However, as the previous poster said...It doesnt hurt anything so, you may want to leave it alone

Thanks folks.

Does the problem usually dissipate after a break-in period with the pistol? I've only fired a few hundred rounds through the pistol.


Can these cases be safely reloaded ?

I'm concerned about weakness in the case wall due to these dings. Some of these cases have severe gouges in the case wall.

Carluchin has correctly identified the problem. It's the ejector that's primarily responsible. You can modify the ejector length or the shape of the contact point and possibly correct this issue. It would also be possible to induce feeding malfunctions and screw up the ejector to the point of requiring replacement. If you decide to modify the ejector, do so in very small increments, or better yet have an experienced 'smith adjust it for you. I doubt Sig would consider the case dings a problem if the weapon is otherwise functioning as designed.

Don't touch the gun!

Dings on the case are a "signature" that the ammo was fired in a semi-auto. Doesn't hurt the case at all.

I reload "dinged" cases, have for years. No problems. It's "cosmetic" and on the ammo, not the gun. Doesn't affect accuracy.

But if you "tweek" the gun -- which works now -- it might very well let you down when you need it.

"It ain't broke. Don't 'fix' it!"

rael: I'd contact SIG. Yeah, you can reload these cases, but they're set up for premature seperation. A SIG just shouldn't ding cases!

quote:

rael: I'd contact SIG. Yeah, you can reload these cases,rael: I'd contact SIG. Yeah, you can reload these cases, but they're set up for premature seperation. .

Cause premature "separation"?!!

What?!!!

Thanks for asking! that scar on the case has pre-stressed the brass making it weaker than the rest of the cartridge case. In the event that the pre-stressed area is scarred again and then reloaded, the case could seperate. True, it might take several occurences, but it is a condition that is not characteristic of a SIG autoloading pistol.

oops. I tawt I taw a liberal gun owner!

quote:

Originally posted by KLN357:
Thanks for asking! that scar on the case has pre-stressed the brass making it weaker than the rest of the cartridge case. In the event that the pre-stressed area is scarred again and then reloaded, the case could seperate. True, it might take several occurences, but it is a condition that is not characteristic of a SIG autoloading pistol.

Ding in the case is not going to create some sort of odd metallurgical anomaly. Where you get stresses on the brass are at the mouth, and the web.

Also, resizing and bullet seating to headspace dia. spec. creates more structural issues in brass then any ding.

Dings are fully supported. That particular area of the case can be well managed by a "paper cartridge."

ALL, semi-auto's ding up brass. It's no big deal. Sig is a "dinger" just like all the rest. It's not a "functional defect."

You are WRONG! Your saying that all autopistols ding brass? What have you owned other than a 1911 or a Glock? I have a SIG in my closet that has never dinged a case and it has about 10,000 rounds thru it with over half of that +P. Neither does my Ruger P-345 or any other autopistol I own. I won't keep a pistol that dings brass because it is exhibiting a flaw in the ability to eject brass correctly. Most 1911 shooters seek to remedy this condition. Glocks don't have relieved ejection ports and ding damn near every case ejected (but at the casemouth) until they are relieved. That area where the ding occured is now the thinnest part of the cartridge case. Have you never seen a case split in half? Open a reloading manual! Better yet, stick to your liberal politics. Paper cartridges are from the blackpowder era where chamber pressures were significantly less and I don't think they're reloadable.

KLN357, I think you are hysterical and funny. What the OP showed will in no way hurt the brass and can be reloaded until the case mouth splits. Which will be before anything else happens. As far as pistols that don't exhibit some hit in the ejection port area, from your statement I bet you return a lot of pistols. You are funny and entertaining.