Originally Posted by stansdds

From what was described, either far too little powder or no powder at all in that cartridge.

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I'm quite a bit older now and maybe a tiny bit wiser. I no longer subscribe to using tiny charges of the fastest powder for a given caliber just so I can save a dollar. Fast burning powders have their place, but I prefer medium burning rate powders like AA#5 and Unique. Even when loading to mid-range velocity, they fill about 1/2 of the case volume, so it's easy to see powder in the case and a double charge is very easy to see.