Search results
Results from the WOW.Com Content Network
Speer Gold Dot 124gr 9mm+P in SIG P226 magazines. Overpressure ammunition, commonly designated as +P or +P+ (pronounced Plus-P or Plus-P-Plus), is small arms ammunition that has been loaded to produce a higher internal pressure when fired than is standard for ammunition of its caliber (see internal ballistics), but less than the pressures generated by a proof round.
Another example of an unsafe firearm and cartridge combination is the firing of saboted rounds in firearms with muzzle devices (such as a flash suppressor, muzzle brake, or choke) unless the muzzle device has been specifically designed for safe use with that particular type of saboted ammunition (see Saboted ammunition and muzzle devices below).
Besides enhanced penetration capabilities, these overpressure variants offer a flatter trajectory and lessened recoil. The increase in service pressure causes a rise in bolt thrust, so this overpressure ammunition induces more stress on critical weapon parts during firing. After initial research conducted in the late 1980s under the codename ...
[12] [13] The 9×19mm NATO and 12.7×99mm NATO rounds can be regarded as overpressure ammunition. Unlike the civilian C.I.P. test procedures NATO EPVAT testing procedures for the "NATO chamberings" require the pressure sensor or transducer to be mounted ahead of the case mouth.
Overpressure (or blast overpressure) is the pressure caused by a shock wave over and above normal atmospheric pressure. The shock wave may be caused by sonic boom or by explosion , and the resulting overpressure receives particular attention when measuring the effects of nuclear weapons or thermobaric bombs .
Walther recommends against the use of “Plus-P-Plus” (+P+) overpressure ammunition in Walther firearms. This marking on the ammunition designates that it exceeds established industry standards, but the designation does not represent defined pressure limits and therefore such ammunition may vary significantly as to the pressures generated. [4]
The media attention gathered by the 38/44 and its ammunition eventually led Smith & Wesson to develop a completely new cartridge with a longer case length, in 1934. This was the .357 Magnum. During World War II , some U.S. aircrew (primarily Navy and Marine Corps) were issued .38 Special S&W Victory revolvers as sidearms for use in the event of ...
A regular and an armor piercing variant were designed, the non-armor piercing bullet taken from the 9×19mm Parabellum and the armor piercing bullet was taken from the RG054 cartridge, it has a black painted tip.