Product Description
In the Soviet Union at the end of the 1920-ies, due to the significant cost of nickel silver used to manufacture bullet shells, serious research was carried out to replace it. Hot rolled low carbon steel turned out to be the most suitable material for such a replacement. For better rust preservation, as well as for good bullet sliding along the bore, the steel shell was covered with a LT-90 tampaca layer (alloy from 89 – 91% copper and 9 – 11% zinc). Despite the fact that Melchior was the most optimal material for bullet casings, and steel in this respect was losing to it, all its disadvantages outweighed the economic advantages obtained by using steel as a material for pulley casings. This was especially important when mass production of ammunition - billions of pieces. In addition, in the course of testing bullets in steel shells, it turned out that the accuracy of their shooting was somewhat better than that of bullets in a nickel silver shell. This was explained by the greater rigidity of the steel shell, which better kept the bullet in the grooves.
3 lego parts
Genuine LEGO part with UV print
Product Information
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