Lee Auto-Drum Powder Measure .223/5.56 Case Adapter
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Replaces the Lee Drop tube that the case contacts to actuate off the shoulder instead of the neck.
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- Printables
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- Other Sports
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- Standard Digital File License
I had endless issues with the default insert for the Lee Auto-Drum Powder Measure gouging cases or crushing freshly annealed case necks or not dropping consistent powder quantities. No matter how I adjusted it I couldn't get both a good drop and an in spec case neck.
This insert replaces the stock one and directs the force onto the shoulder of the case for actuation not the neck.
I am designing around H335 ball powder and do not have other forms of powder to test. The narrow choke funnel is 5mm and sits just at the case mouth to reduce chances of leaking around the case.
This is designed to be printed in resin. I can make you one for about the same price as the model plus shipping which shouldn't be much. DM me if you are interested.
This design has been validated through 3 dozen rounds with no ill effects noted. There is a tight fit on the tube end of the powder dropper so I will upload a looser fit version later.