Did a little experimenting a while back never finalized a load.
Don't believe I'll ever shoot to many but they are entertaining for all who have shot them.
The silver tops are aluminium gas checks, roll crimped in place.
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Filled the case with shot, weighed max payload then backed the payload back until I could fit it with an appropriate powder charge.
These are 357mag cases with somewhere around 90gn? (without checking notes) depending on pellet size.
The clear plastic is cut from CD cover, roll crimped
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