Sorry, but I reload, so do not have any modern 38 S&W ammo boxes. I do know that there were gun boxes with warnings about smokeless powder in the early 1900s, but that changed within a few years. You might try searching the Forum since I have seen images of those early warnings on gun boxes.

I have not seen any US ammo with specific warnings about vintage and antique revolvers, but rather they were all along the line of "This ammunition is intended only for revolvers in good working order" or something like that.

From what I read about Australia and other countries gun laws, I would be surprised if the government officials would care much. Their intent was to limit ownership to firearms and access to ammunition, so why would they want to ease current regulations? The long slippery slope only goes in one direction once you start down that trail. That is what we worry about here in the US.

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Gary
SWCA 2515