I have no idea. I opened one. It appears to be a live primer with a very fine power and no shot.
![20200224_203744.jpg 20200224_203744.jpg](https://cdn.imagearchive.com/okshooters/data/attach/130/130856-20200224-203744.jpg)
![20200224_203813.jpg 20200224_203813.jpg](https://cdn.imagearchive.com/okshooters/data/attach/130/130857-20200224-203813.jpg)
![20200224_203827.jpg 20200224_203827.jpg](https://cdn.imagearchive.com/okshooters/data/attach/130/130858-20200224-203827.jpg)
![20200224_203841.jpg 20200224_203841.jpg](https://cdn.imagearchive.com/okshooters/data/attach/130/130859-20200224-203841.jpg)
You don't know what it is, but you have 50 of them?
.38 blanks?
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