While dimensionally similar, the Tokarev cartridge has a shorter neck and operates at higher chamber pressure, than CIP specifications for the 7.63 Mauser, (36,250 vs. 357 Magnum matched the Mauser's ELEVEN boards. 44-40 each penetrated 8 boards while the. Hatcher stated that their penetration was eleven 7/8" pine boards, versus 5 boards for the. WW1 and WW2 German military loads approached 1400 fps from the Mauser M96 with 5.5-inch (14cm) barrel, according to contemporary sources. This was based upon US commercial ammunition loaded to a maximum average pressure of 29,000 psi. ![]() Hatcher's Textbook of Pistols and Revolvers (1935) described the 7.63 Mauser as developing 1300 fps. This agrees with modern tests of surplus ammo. The US Army Foreign Science and Technology Center, Small Caliber Ammunition guide lists USSR “P Ball” as 500 m/sec (1,640 ft/sec) from the 25cm (9.8”) barrel of the PPSh-41. Smith lists Russian P-Ball at 1378 fps from the TT33 Tokarev pistol, based upon the Soviet Red Army specification of 420 +/- 10 m/s. Besides FMJ ball cartridges, API and tracer rounds were loaded by the Soviets during WW2 for submachinegun use. In 1930, the Soviet Union adopted the Mauser cartridge, under the designation 7.62 mm Type P, for the Tokarev TT-30 and TT-33 automatic pistols, and later for the PPD-40, PPSh-41, and PPS-43 submachineguns.
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