🔎 UNIDENTIFIED Modern or a bit older?

[Nathan W]

Found this bullet . The actual bullet is deteriorating which I've never seen. Says HP, hollow point? Found in vacinity as pistol ball . Could it be modern and the soil be highly mineralized to speed up the deterioration?

 

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[RickDDE]

Found this bullet . The actual bullet is deteriorating which I've never seen. Says HP, hollow point? Found in vacinity as pistol ball . Could it be modern and the soil be highly mineralized to speed up the deterioration?

HP stamp is used by Hirtenberger Patronen
Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Niederdonau, Austria.

Since it's a rimfire, I would lean towards pretty old. I found a .22 with US stamp that was from 1890s.

Headstamp Codes – International Ammunition Association

cartridgecollectors.org

 

[RickDDE]

Headstamp Codes – International Ammunition Association

cartridgecollectors.org

HP stamp is used by Hirtenberger Patronen
Zündhütchen-und Metallwarenfabrik A.-G., Hirtenberg, Niederdonau, Austria.

Since it's a rimfire, I would lean towards pretty old. I found a .22 with US stamp that was from 1890s.

Headstamp Codes – International Ammunition Association

cartridgecollectors.org

This would be worth digging into. I found this online, but yet to be verified.

• Otto Eberhardt Patronenfabrik (English: "Otto Eberhardt Cartridge Factory") was a munitions company established in 1860. The company's Hirtenberger Patronen, Zündhütchen und Metallwarenfabrik (English: "cartridge, primer and metalware fabrication in Hirtenberg") near Wiener Neustadt (proofmark "am") used forced labor during World War II from a sub-camp of the Mauthausen-Gusen concentration camp and produced ammunition including 9×19mm Parabellum (pistol and submachine gun) and 8 mm Mauser (rifle) cartridges. The company also had a factory in Ronsdorf near Wuppertal (proofmark "ap") which produced rifles. Additional Gustloff facilities were in Meiningen and Weimar. (en)

 

[Nathan W]

Headstamp Codes – International Ammunition Association

cartridgecollectors.org

This would be worth digging into. I found this online, but yet to be verified.

• Otto Eberhardt Patronenfabrik (English: "Otto Eberhardt Cartridge Factory") was a munitions company established in 1860. The company's Hirtenberger Patronen, Zündhütchen und Metallwarenfabrik (English: "cartridge, primer and metalware fabrication in Hirtenberg") near Wiener Neustadt (proofmark "am") used forced labor during World War II from a sub-camp of the Mauthausen-Gusen concentration camp and produced ammunition including 9×19mm Parabellum (pistol and submachine gun) and 8 mm Mauser (rifle) cartridges. The company also had a factory in Ronsdorf near Wuppertal (proofmark "ap") which produced rifles. Additional Gustloff facilities were in Meiningen and Weimar. (en)

Ok thanks for the In depth response