Interesting reloading fail

Just noticing the cannelures on the cartridges in the background.

Looks like some sort of malfunctions in seating depths.

Might oughta check out the equipment.
 
Oh wow. Thats a new one for a 223 case. I did this not to long ago with a .40 case but that was with bullets that had a pretty sharp base.
 
One day I built a bullet seater, I built it without a die body. The plan was to center the bullet with the case neck with support.

And then there are tools that bevel the inside of the case neck and bullets with sharp edges on the base. In the old days Herter made a seating die called 'universal', the die body had a slot cut into the side of the die body; the slot allowed the bullet to be dropped into the bullet guide while it set on the case neck.

And now I have RCBS Competition and Bold Medal seating dies with the same concept.

So what happened? The bullet hung on the neck of the case and pealed it because there is no support for the case body, neck or shoulder when seating a bullet.

Most seating dies are designed to have the bullet placed on the top of the case neck; reloaders assume the bullet aligns with the neck, some bullets tilt and then straighten when the ram is raised.

F. Guffey
 
Dufus said:
Just noticing the cannelures on the cartridges in the background.

Looks like some sort of malfunctions in seating depths.

Might oughta check out the equipment.

Also may be the brass has stretched and not trimmed.
 
And then there is that rub board pattern on the necks ;)I stuck the roll eyes thing on the end because I could not find one that sounded like HMMMMM.

F. Guffey
 
I've had that similar situation occur on pistol rounds where I didn't put just quite enough flare on the mouth of the case.

The projectile grabs a spot on the case mouth and drags it down during seating...

I haven't yet had this occur with a rifle case, though....
 
And if the bullet aligned with the case neck perfectly there is a chance the bullet would not have hung on the case neck or if the reloader had used boat tail bullets or if the bullet had a radius or had the reloader not tilted the bullet on top of the case before raising the ram. Most reloaders depend on the die to straighten the bullet on top of the case.

F. Guffey
 
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Yep, it's pretty hard to start a .224" plug into a .221" tube without some sort of "entry way" (chamfer, flare)...:p
 
It could be that the cases were trimmed on a collet type tool and accuracy was poor. That could explain the canalure showing.

As I look at the picture. I think I see some of the case mouths are flat indicating to me that some cases weren't chamfered or the collet held the case farther from the chamfering cutting tool. Some one may be in a hurry and not carefully double checking.

Some flat base bullets have sharp bases that can snag on the slightest tip of the bullet when seating. By taking your time and carefully feeling for bullet to start can help prevent this problem. I have seen this with Hornet cases that have very thin brass.

If the flat base bullets are too difficult to start use a bullet with a beveled base or as most are called boat tail bullets.

I notice that the cases are not of the same lot. Some have crimp witness marks at the out side of the mouth.

All the more to double check length of the cases.

The more I look at the picture the more I see. I don't think the cases were properly chamfered if at all.
 
I assume the washboard pattern Mr. Guffey noticed means that case was fired in a fluted chamber. You see more of them in 7.62 arms, but they are done in 5.56 as well. This means the brass is either a range foundling or once-fired from a range with a variety of shooters using it. The case may have come from a firearm that scored it badly and encouraged this failure, but the brass looks torn. I can't see the photos clearly enough to be sure there's no chamfer, but if that's the case, the cure is to add one or use a Lyman M die as as an additional operation.
 
Yep, it's pretty hard to start a .224" plug into a .221" tube without some sort of "entry way"

They are 55g boat tail, so not quite.

I assume the washboard pattern Mr. Guffey noticed means that case was fired in a fluted chamber

No, the Lee die does that. They told me it's normal.
 
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