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FTF Conundrum, 6BR CCI450

Ever have one of those days where you get out of bed and soon start feeling like it's opposites day? Like what ever you thought you knew, is suddenly wrong? I'm having one of those days today and I'm reaching out to my shooting buddies for advise and hoping I'm not going completely off my rocker.

This is a story about two Fail to Fire rounds I shot yesterday while load developing my buddy's 6BR who's laid up right now and can't get to the range. As a side note, I should mention that I left the shooting range yesterday because it was storming so bad and I found myself walking out to the target with an umbrella while lightening was coming down all around, so now I'm worrying I was struck by lightening and didn't know it. That's how stupid I'm feeling. :confused:

The two rounds that FTF were new virgin Lapua brass with CCI450 primers that I'd installed for my buddy about 6 or 8 months ago. They were kept indoors all that time so I thought they'd be OK. And they were. All cases loaded and shot normally with the exception of these two.

Both rounds went "click" with no other indication on the range. Upon pulling down at the bench today I discovered I'd not charged them. The primers had fired, the bullets were sooted on the base, and primer pockets blackened as usual, and my first thought was this can't be! Primers alone will drive the bullet into the lands causing an obstructed barrel if not cleared. Or so I've read many times.

I still had one of the previously primed virgin cases left so I seated a bullet, chambered it and pulled the trigger.

Click.

I pulled it down, and same thing. Sooted bullet base, spent primer. Absolutely no indication of gas leak around the bullet or primer.

I seated a fresh CCI450 primer in another virgin case, seated a bullet and chambered it. Same result but this time I measured the CBTO before and after. No change. Case was slightly warm, but that's it. No gas escape noted.

The studies I've read and relied upon were mostly done with large rifle primers. Is there that much difference in primer strength? Or is it that the unseating of the bullet by the primer requires a powder charge to act as a piston transferring primer energy to the bullet, but the primer can't do it alone?

Any and all comments welcome, and thanks in advance for all your help.

Now, off to find that bottle of Tequila I stashed away for a special occasion. :D
 
Are you maybe seating the bullets into the lands thus requiring more umph than the primer alone can muster to get the bullet moving?
 
were the necks opened with an expander before seating the bullet. It's something I always do with new brass.
 
Do you know the primer’s history (age, how they were stored, etc...)? CCI may be to provide good input especially if you know the primer lot number that is located on the cardboard sleeve that encloses each tray. Did you notice any pressure/gas release when you pulled the bullets? It would have been expected after noting no signs of soot on external case surfaces...
 
An uncharged case leaves a large volume for the ignited primer's gases to expand thus lowering the potential pressure. With enough hold on the bullet your findings do not surprise me. If you could inactivate the same powder, charge a case, repeat the exercise I would put money down that the bullet would then move. Of course I would be betting internet $$$ only.;)

edit- or fill it with birdshot

Robin
 
Do you know the primer’s history (age, how they were stored, etc...)? CCI may be to provide good input especially if you know the primer lot number that is located on the cardboard sleeve that encloses each tray. Did you notice any pressure/gas release when you pulled the bullets? It would have been expected after noting no signs of soot on external case surfaces...

Primers were my first thought. That's why I seated a new primer and retested. Same result. No pressure release evidence, no soot on external surfaces, so sign of leakage around the pulled bullet or primer.
 
An uncharged case leaves a large volume for the ignited primer's gases to expand thus lowering the potential pressure. With enough hold on the bullet your findings do not surprise me. If you could inactivate the same powder, charge a case, repeat the exercise I would put money down that the bullet would then move. Of course I would be betting internet $$$ only.;)

edit- or fill it with birdshot

Robin

Hmmmm.... how about rice?
 
I’ve been known to miss charging a case or two here and there. None of them have ever unseated a bullet with primer power alone.
 
Last edited:
I’ve been know to miss charging a case or two here and there. None of them have ever unseated a bullet with primer power alone.

Interesting... I’ve not yet missed charging a rifle round, I have :(regretfully on one .45 and one .40 caliber pistol round. In each instance, the jacketed bullet nearly cleared the barrel. Any thoughts on why a rifle primer would not at least expel the bullet out of the case?
 
Interesting... I’ve not yet missed charging a rifle round, I have :(regretfully on one .45 and one .40 caliber pistol round. In each instance, the jacketed bullet nearly cleared the barrel. Any thoughts on why a rifle primer would not at least expel the bullet out of the case?

I have no idea why would be, but I would like to hear thoughts on the subject.
 
In my experience I have failed to add powder to 1 rifle cartridge (308) - bullet seated with only 1.5 thou neck tension. Bullet didn't move.

I've also fired a squib (no powder) .357 mag before and it's enough to get the bullet out of the case and into the barrel. Which is really scary but a different story.

Point being, I think there's enough capacity in a rifle case to not move the bullet.
 
I've had the same experience as the OP.

I had missed 10 ...A whole row out of 40 in my reloading block. Several went click but no boom,pop, nada ... Ejection was normal. Bullet looked normal wasn't until I pulled it apart that I saw primer did go off.
I was so confused .... With pistols it would have been a squib.
 
I did it a few weeks ago with a 223 rd with a 450 and it didn't send the bullet. I also did it last fall with a 300 WSM with a mag primer.... nuttin happened there either. Don't know how I skipped either case when charging, but it pisses me off. Mind was elsewhere I suppose.
 

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