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44-40 Bullet "Shaving"


Savvy Jack

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What I thought was going to be a seating problem ended up being, or what had to be, FOD in the die. Could not be confirmed since no FOD evidence was found.

As I dissected the cartridge, it began to talk to me a little bit and by the time it was completely dissected, it was somewhat yelling at me!!!

Looked like the bullet seated fine, expected such since I did it by hand. At some point at the top of the bottom driving band it began to cave in and seemed to be a gradually get worse by the time the seating was complete.  Starts out shallow and is also evident from the middle driving band where it starts shallow and gets deeper. By the time the mouth hit the forward driving band, it dug itself deeper. Crimp was not applied until the next step using the Redding Profile Crimp die.   As the bullet was removed from the case, the bottom driving band expanded the damaged area back out round.

 

Maybe I need to go buy a lottery ticket. First problem in several thousand. 

Starline Brass
43-214A sized .428
Unique powder charge

RCBS Cowboy seating die.

This was found after many were loaded and was the only one....contributing to why it must have been a fluke!
 

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In the top photo, it appears that the case mouth folded in on itself.  That is unusual and suggests that your surmise is correct.  The interesting thing is that the case mouth went back to round as the bullet was removed.  Even so, the round would have probably ignited.

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2 minutes ago, Tex Jones, SASS 2263 said:

In the top photo, it appears that the case mouth folded in on itself.  That is unusual and suggests that your surmise is correct.  The interesting thing is that the case mouth went back to round as the bullet was removed.  Even so, the round would have probably ignited.

 

Yes but my OCD was killing me and I had to act like a scientist!!! :lol:

The case resized fine with no damage, the bullet was sent back through the RCBS lubsizer. It is now a cartridge again...LOL


 

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5 minutes ago, Savvy Jack said:

 

Yes but my OCD was killing me and I had to act like a scientist!!! :lol:

The case resized fine with no damage, the bullet was sent back through the RCBS lubsizer. It is now a cartridge again...LOL


 

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If it fits in the case gauge it's fired.  :P

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I recently had a very similar problem like yours when reloading my 32-20 WCF. I was checking and cleaning everything especially the resizing die. Well it turned out being the neck expander die. For some reason every now and then the case mouth would hit the side of the expander going in and it would cause that nick in the case mouth. I ordered a Lee Universal Expander Die, set it up, and haven't had that issue since.

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On 9/13/2020 at 6:12 PM, John Boy said:

Jack, the Lee Universal and half the bullet base setting in the case mouth ..... 

 

I do the same thing with the Lyman "M" die, the full base sits in the bullet. The "deformation" didn't start until after the seating process started, past or at the top of the bottom driving band.

 

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