Primer issues

[pills]

And for more grins, look at the first post and the picture, look closely, examine the the primers, my opinion, NOT GOOD! Especially the one on the bottom left, it has a crater as in a dent in the middle with a high wall around it, meaning? Pre-existing condition, again, I would replace the firing pin spring,

F. Guffey
[/quote]
Not sure what your talking about here? The gun is an AR not a bolt gun. Anyway just to update you guys. The problem was that the ammo is not to be used in a mid length or shorter gas system. The attached hornady link nailed the issue. I stopped firing the sperformance as soon as I noticed the primers. I have since fired a couple hundred Blackhills match and then my reloads with no further issues. I didn't have to change anything.
Thanks again
PILLS

 

[fguffey]

“fired primer with a small dent is the first warning a shooter gets when the spring is weak”

“And for more grins, look at the first post and the picture, look closely, examine the the primers, my opinion, NOT GOOD! Especially the one on the bottom left, it has a crater as in a dent in the middle with a high wall around it, meaning? Pre-existing condition, again, I would replace the firing pin spring”

Your primers tell a story, you can claim an exemption for your rifle and its design, again “fired primer with a small dent is the first warning a shooter gets when the spring is weak” your primers have small dents, no dents and dents with holes in them. High pressure also tells a story, nothing about your case heads indicate a pressure issue, if your cases were not ready to leave the chamber when the bolt decided to extract them we would be talking/telling the same story told when 308W ammo is fired in a machine gun. I will assume you did not measure the length of the case from the case head to the shoulder-before and after firing. Could be another exemption we could apply to the rifle and design, the case does not stretch when pulled by the extractor even when the case is locked onto the chamber, nor does the extractor leave any sign of a conflict on the rim of the case.

F. Guffey

Then there is the possibility the bolt left before the case released itself from the chamber, but, if that happened I would think the primers would have backed out, so, that leaves me to believe the bolt stayed with the case and the pressure inside the primer was sufficient to push the firing pin back, something about supported and unsupported.

 

[pills]

I guess I am not understanding you. Which spring is weak? The hammer spring or the recoil spring?
The AR doesnt have a spring that I would call a "firing pin spring"
If this is the case why am I no longer having any problems with any other rounds fired?

 

[fguffey]

Pils, M1 shooters want an exemption, the M1 Garand does not have a spring in front of or behind the firing pin, it floats, some M1 Shooters believe the firing pin remains pinned to the primer because of inertia, it is believed the firing pin is forced forward by the return of the bolt to the rear. Little consideration if given to the trigger group, the trigger group has a club/hammer that is releases when the trigger is pulled, the hammer is pushed back when the bolt is forced to the rear by the gas operated slide system. Because of the light weight of the firing pin it does not require a spring to push the pin back, other auto-loader do have springs in front of the firing pin, so yes, your primers indicate a weak spring, a weak spring allows pressure inside the primer to push the firing pin back.

Again, the primer on the bottom left indicates a crater, a dent with a high wall around it, to me, that would indicate a problem with the hole around the firing pin.

Again, there are no signs of high pressure with the exception of punched primers, it is possible your rifle is not strong enough to tolerate a stronger spring, it could be your rifle is ignoring all the sign of pressure, again, I believe your spring is marginal, but, as Hornady says/claims their ammo if scientifically developed, and I suppose they omitted testing their scientifically developed ammo in rifles similar to yours or they tested their ammo in rifles with stronger springs.

F. Guffey