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130-grain (8.4 g) – soft point 150-grain (9.7 g) – round nose The next important change in the history of the rifle bullet occurred in 1882, when Lieutenant Colonel Eduard Rubin , director of the Swiss Army Laboratory at Thun, invented the copper-jacketed bullet — an elongated bullet with a lead core in a copper jacket.
The older .38 ACP cartridge propels a 130-grain (8.4 g) bullet at 1,050 ft/s (320.0 m/s), whereas the .38 Super pushes the same bullet at 1,280 ft/s (390.1 m/s). [3] The .38 Super has gained distinction as the caliber of choice for many top practical shooting competitors; it remains one of the dominant calibers in IPSC competition.
Issued only by the U.S. Air Force, the PGU-12/B had a greatly increased maximum allowable pressure rating of 20,000 psi, sufficient to propel a 130-grain FMJ bullet at 1,125 ft/s (343 m/s) from a solid 6-inch (150 mm) test barrel, and about 950–1,000 ft/s from a 4-inch (100 mm) revolver barrel. [19] The PGU-12/B High Velocity cartridge ...
For 1934, Berliet introduced the GDL, [13] a 5 tonnes payload chassis similar to the GDHM [9] aimed at replacing the GDHL. [17] It was initially offered in four variants unveiled through the year: GDL 20 (10.5 tonnes GVW, MLB6 engine), GDL 22 (10.5 tonnes GVW, 22 CV four cylinder MKB engine), GDL 7 (12 tonnes GVW, MDB engine) and GDL 8 (11 tonnes GVW, MDC engine). [18]
The round was derived from the 14.5×114mm round by necking it out to 23 mm. [1] The original rounds used a lower power charge of 33 g of sw 4/7 powder and achieved 690 m/s at a maximum pressure of 294.3 MPa.
The cylindrical "shank" or "bearing surface" of the bullet, just in front of the cartridge case mouth, was .374 or .375 in (9.50 or 9.53 mm) in diameter, the same as the outside diameter of the cartridge case (as in .22 rimfire cartridges). A smaller-diameter portion of the bullet, the "heel", was crimped inside the case mouth, and the ...
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Operation Dominic was a series of 31 nuclear test explosions ("shots") with a 38.1 Mt (159 PJ) total yield conducted in 1962 by the United States in the Pacific. [1] This test series was scheduled quickly, in order to respond in kind to the Soviet resumption of testing after the tacit 1958–1961 test moratorium.