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Power factor (PF) in practical shooting competitions refers to a ranking system used to reward cartridges with more recoil. Power factor is a measure of the momentum of the bullet (scaled product of the bullet's mass and velocity), which to some degree reflects the recoil impulse from the firearm onto the shooter (see section on limitations).
Minimum caliber for minor scoring is 9×19mm loaded to a power factor of 125 kgr·ft/s while minimum caliber for major scoring is a 10 mm (.40") cartridge loaded to a power factor of 165 kgr·ft/s, making for an interesting choice between minor and major scoring taken in mind the differences in recoil, magazine capacity and scoring points.
The International Practical Shooting Confederation (IPSC) is the world's largest shooting sport association, and the largest and oldest within practical shooting.Founded in 1976, the IPSC nowadays affiliates over 100 regions from Africa, Americas, Asia, Europe, the Middle East, and Oceania. [1]
9mm Major is a wildcat cartridge of the 9mm Luger specifically for competition pistols designed to handle very high pressure. It is used in practical shooting competitions like International Practical Shooting Confederation (IPSC) and United States Practical Shooting Association (USPSA) to achieve a "Major" power factor, which earns more points for hits in specific zones on paper targets ...
Action Air is an airsoft shooting sport based on practical shooting under the International Practical Shooting Confederation.The sport enjoys popularity in countries and areas such as Taiwan, Hong Kong, Macau, South Korea, and Japan, where civilian ownership of real firearms are either illegal or extremely difficult to obtain, but it is also used by some owners of real firearms as an ...
The power factor in a single-phase circuit (or balanced three-phase circuit) can be measured with the wattmeter-ammeter-voltmeter method, where the power in watts is divided by the product of measured voltage and current. The power factor of a balanced polyphase circuit is the same as that of any phase. The power factor of an unbalanced ...
The iPSC technology was pioneered by Shinya Yamanaka and Kazutoshi Takahashi in Kyoto, Japan, who together showed in 2006 that the introduction of four specific genes (named Myc, Oct3/4, Sox2 and Klf4), collectively known as Yamanaka factors, encoding transcription factors could convert somatic cells into pluripotent stem cells. [1]
MIL-STD-498 standard describes the development and documentation in terms of 22 Data Item Descriptions (DIDs), which were standardized documents for recording the results of each the development and support processes, for example, the Software Design Description DID was the standard format for the results of the software design process.