Hi, Chris. The warning I think you're looking for was more prominent on boxes of ammo from about 1900 to 1930s, with the advent of smokeless powder to warn user it may not be suitable for black powder guns. Are you seeking such warning on a modern box of ammo ? Those black powder warnings were no longer emphasized by the 1950s.
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Last edited by model3sw; 04-16-2018 at 03:33 PM.
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