Resizing rings/slivers

[Dudedog]

I have a Lee .223 sizer and have never had an issue like that. I use Dillon or Frankford spray on case lube (they seem to be the same stuff).

Things could be out of alignment but I would thnk the case would center itself in the die.
I really think something is not right with your sizer even if the company who made it say it's ok. The only way to tell for sure would be to try the brass and the lube you are using in a different sizer.
Maybe the brass was fired in a way out of spec chamber but I just don't think that's the issue.

As a side note I have various sets of Lee dies, they are inexpensive and work well for me.


Hope you get to the bottom of it, something is definitely not right IMO.

 

[Blue68f100]

With the die removed, take a piece of brass and try to scrape it with the sizer opening. could be a smaller dia to make it easier to work the edge. If you have a sharp edge is should scrape it. If you find it's sharp all the way around the mfg need to fix it. Since the brass and the shaving to them. It would not hurt to send the photos you have to them and see what the say.

If the sizer has a radius on it, there is NO way will scrape even if it's not centered.

If you find the sharp edge, the best way would be to spin the die in a lathe or even a drill. Then use a stone or sandpaper (with backing) to break the edge.

 

[Xelera]

Gamestalker was pretty close... the threads on the press are ok, the threads on the die are too fine/loose.

Had a machinist check the die over. Ne noted the threads were too fine/loose by using a thread sizing gage for what they should be. He demonstrated his point by putting a locking ring on a good die with in spec threads and it fit mostly snug and traveled freely but with some slight friction drag. It could maybe travel half a thread with each spin given.

Then he put the lock ring on the suspect die, and it was so loose it wobbled, and when spun, could travel 3 threads length/revolutions before stopping.

He also noted almost no visible bevel at the mouth, and though the mouth itself was not a sharp shoulder, the inside wall where it met the bevel was a sharp shoulder. He didn't radius the die per se, but put it in a lathe, and polished it to give it a smooth but slight bevel without such an abrubt transition.

As for the thread issue, he agrees if I want to try and salvage the die, that I should try setting it with the ram raised and a casing in the shell holder (thanks RCModel) to semi-align the die before locking it in place, as mentioned earlier, and also that teflon tape may be enough to fix the slop.

I'll try sizing a few rounds tonight and see if this makes any improvement.

Details to follow.

 

[243winxb]

RCBS shell holder in contact with FL die, cam over. Then lock die in. I use channel lock pliers. This squares the die to the shell holder.

 

[joem1945]

I was given a bunch of once fired .44 mag brass. When I sized it I had that condition but much much worse. Every 6 to 10 cases I had to remove the decap pin and clean the die. I fired them one at a time and inspected each case before loading another. No splits or cracks. With the Second sizing it wasn't as bad. The brass was S&B. I think I'll shoot it until it splits for light loads only.