Looking for info about these vintage Federal HI-POWER 20 Gauge Rifled Slugs - General Ammunition Discussion - International Ammunition Association Web Forum

Hey all, I came across these shells while cleaning an old barn out that I was told has been standing since the prohibition days. Among other items that were clearly antique was a stash of what I assume would have been quite valuable magazine/tabloid type print publications from the JFK assassination in '63, if they had not been soaked in animal urine and feces. I only mention them in the hopes that it might help narrow down the age of these 20 guage slugs. I’ve scrolled through Google results un

2023 October 25 The Paul Friedrich Collection of Firearms & Gold

Looking for info about these vintage Federal HI-POWER 20 Gauge

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Amsj May 2016 by Media Index Publishing Group - Issuu

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Vintage 7x57 Mauser - General Ammunition Discussion

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The Glaser Safety Slug - #18 by USSubs - General Ammunition Discussion - International Ammunition Association Web Forum