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Mine definitely isnt a headspace issue, ive been bumping the shoulder back a thou. Basically all of my lapua brass is wrecked now, slowly but surely the ones that were ok are now buggered. All i can...

Ive come to the conclusion its faulty brass. Mainly because my processes are the same with not just this brass but all the brass for all my rifles, and ive never had this before. Not to mention, most...

Interesting, will take the expander ball out and so some measuring. Although i find it strange its only some cases that go bad, majority of them are perfectly fine. Same dies that i used for my last...

Have done this, and interestingly aztec came up with a lower number this time compared to when i originally tested this batch of brass, suggesting its softer now than it was from new & now requires...

Firing is when its cracking. They didnt look like this when i sized them & loaded last batch. Didnt notice any accuracy issues or anything weird, took all the brass ultrasonic cleaned & tumbled it...

All of this brass has been fired in the same rifle but only some of it has cracked. Chamber is spotless, im pretty careful with my cleaning. Will put a picture up of some other cases. - Just tried to...

All of the cracked ones are in various stages of cracking part or all the way through the neck on that same vertical direction in various places the whole circumference of the neck. The rest of the...

I also use lapua brass in my 6.5 Creed & .308. I follow the same process for reloading with that brass too, Same ultrasonic cleaner & fluid (hornady one shot sonic cleaning solution). .308 brass is...

I trim them to 2.015" using a L.E wilson case trimmer, every loading. I assume thats correct, from the hornady manual

Yep thats another crack forming, most of them are like this. Multiple vertical cracks all the way around the circumference of the neck some just beginning some blown all the way through


Sent...

Fired brass with the splits in it measures .297 which is SAAMI reamer spec for 6.5 PRC. Freshly sized brass measures .291 and loaded with a projectile .293. So 6 thou of expansion total after...

Not yet, just figured theres so many blokes far more experienced than i on here, be a good place to ask and see if anyones running into the same issues.

I have done the usual google searching and understand all the usual suspects for the cause of split necks however my issue doesnt seem to be consistent so with so many experienced reloaders on this...