[mnhntr]

While working up a load for my new rifle I had a piece of brass stick in the chamber and it was really hard to open the bolt. I insected the brass and found what you hopefully see in the pics. It looks as though the bottom shoulder deformed while firing or was deformed prior to firing. The load was 42gr of H4350 under a 140gr VLD. The brass is new Winchester 7mm-08 necked down in a RCBS FL sizer die.

[tri70]

Are you using a full length sizing die? Also was this the only round that gave you problems? I get a piece of bad brass once in while but if the other rounds fired ok then I would say a bad brass.

[mnhntr]

Only one that gave me a hard time. I quit the 42gr loads for safety but I had fired them before with no problem. Yes an RCBS FL size die.

[Ol` Joe]

I am almost certain you are not seeing pressure. Your load is a few grs below Hodgdons recommended starting load and any load I have used in my 708s with the same powder.
I am not sure what you are looking at in your pictures and see nothing in the shoulder area that looks out of place, but believe it is the "pressure ring" that forms at the point the solid case wen ends and thinner walls start at the base of the case. it is normal and nothing to worry about.
Perhapes the primer is backing out slightly and you are feeling the drag from it pressing on the bolt face?

[mnhntr]

Sorry Joe not the shoulder but the angle above the base of the case. I have found inconsistancies in several now that I am looking at them. It is barely there on one side and normal on the other. Heres more pics.

[kingmt]

It looks like the primer is still round. No great pressure.

[mnhntr]

The primers look good. They had very slight flatening but they are Federal so they are soft.

[GT1]

Looks to be factory deformed just above the extractor groove, weird.

[788Ham]

Looks like its a tad bit deformed just above the extraction groove, if it bothers you, I'd just toss it and your good to go. Once in a while you'll run across one like this, just a factory goof, no big deal.

[Strongbad]

+1. Looks like a QC issue. I'd probably chunk it and start over.

[gamestalker]

I see what your referring to and in my opinion it is deformed brass, not a pressure caused circumstance. I haven't looked at the Hogdon data for that powder, but assuming it is among the slower burning powders for that 7-08, I would error on the side of caution regarding reducing the load too much, or you may encounter some pressure inconsistencies, or spikes.

[mnhntr]

Went through and found 15 more in the new stuff I bought. Must be a QC issue. I emailed Winchester to see what they will do.

[rcmodel]

Definitely a bad case.

The extractor groove cutter machine done cut it off-center & crooked somehow.

rc

[NCsmitty]

+1 on rcmodel.

I would not use those cases, see what Winchester says about replacing them.

Your load of 42gr of H4350 is too low according to www.hodgdon.com, where they list 45gr of H4350 as a start load with a 140gr bullet.


NCsmitty

[mnhntr]

Actually it is being used for 260 rem so the load is right on.

[243winxb]

7mm-08 necked down to 260 rem What is the loaded rounds neck diameter? .2970" is maximum. If to fat, crimping bullet in case, pressure will be high. My 2nd guess is the bolt face is not square to the chamber. 3th its bad brass from the new employees & equipment at Win. when they moved the factory http://www.saami.org/PubResources/CC_Drawings/Rifle/260%20Remington.pdf

[243winxb]

This photo looks like the primer has flowed into the firing pin hole. A pressure sign. http://www.thehighroad.org/attachment.php?attachmentid=163444&d=1335407893

[mnhntr]

Its bad brass I found more that are unfired