12,7x99 (.50 Browning) FA 43 *

[Aorta10]

Purtroppo non ricordo più se il bossolo è stato ottenuto per Estrusione, caricamento speciale ho altro… Qualcuno ha idea del significato della stellina?
Ovviamente questo modello è da manipolazione con bossolo semilavorato.

12,7FA2.jpg

12,7FA1.jpg

[DerkJan]

To prevent cracks in the case, of the .45 ACP cartridge, caused by the swelling of the tracer composition under certain climatic conditions, the brass cases for tracer cartridges were made somewhat softer by annealing to allow greater elasticity. To identify this change in the hardness of the brass, which was called “high annealing” by Frankford Arsenal, the headstamp of the case included one star. Example of this headstamp style is FA * 41
I think the star has on the .50 Machine Gun Cartridge the same meaning high annealing to made the brass softer.
This information is from the book “HISTORY OF MODERN U.S. MILITARY SMALL ARMS AMMUNITION”
by F.W. Hackley, W.H. Woodin and E.L Scranton. 1978 ISBN 0-88227-007-9

[Aorta10]

Grazie DerkJan. Probabilmente è come dici tu, ho un altro esemplare Tracciante…
Sono rare queste cartucce?

Thanks DerkJan. Probably it is as you say you, I have another Tracing sample…
Are these cartridges rare?

[Andrea58]

To prevent cracks in the case, of the .45 ACP cartridge, caused by the swelling of the tracer composition under certain climatic conditions, the brass cases for tracer cartridges were made somewhat softer by annealing to allow greater elasticity. To identify this change in the hardness of the brass, which was called “high annealing” by Frankford Arsenal, the headstamp of the case included one star. Example of this headstamp style is FA * 41
I think the star has on the .50 Machine Gun Cartridge the same meaning high annealing to made the brass softer.
This information is from the book “HISTORY OF MODERN U.S. MILITARY SMALL ARMS AMMUNITION”
by F.W. Hackley, W.H. Woodin and E.L Scranton. 1978 ISBN 0-88227-007-9

[Aorta10]

In seguito ad una chiacchierata con Andrea e a qualche ricerca in rete, mi è sembrato di capire che questi bossoli venivano prodotti con leghe di ottone (Rame + Zinco) con percentuali diverse, non particolarmente idonee alla produzione di cartucce calibro.50…
Da qui la ricottura del bossolo finito ad elevata temperatura per renderlo più elastico.
In pratica sono munizioni di seconda scelta?