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  2. Small arms ammunition pressure testing - Wikipedia

    en.wikipedia.org/wiki/Small_arms_ammunition...

    The defined distance for a particular chambering is published in the TDCC data sheet of the chambering. In a rifle cartridge case like the .308 Winchester, the TDCC M = 25.00 value denotes the transducer must be positioned at a distance of 25 millimetres (0.98 in) from the breech face. [2]

  3. Bolt thrust - Wikipedia

    en.wikipedia.org/wiki/Bolt_thrust

    Bolt thrust or breech pressure is a term used in internal ballistics and firearms (whether small arms or artillery) that describes the amount of rearward force exerted by the propellant gases on the bolt or breech of a firearm action or breech when a projectile is fired.

  4. Circular error probable - Wikipedia

    en.wikipedia.org/wiki/Circular_error_probable

    Printable version; In other projects ... CEP concept and hit probability. 0.2% outside the outmost circle. ... is given by the following formula: (, ...

  5. Hand formula - Wikipedia

    en.wikipedia.org/wiki/Hand_formula

    A common metric for quantifying losses in the case of work accidents is the present value of lost future earnings and medical costs associated with the accident. [2] In the case when the probability of loss is assumed to be a single number , and is the loss from the event occurring, the familiar form of the Hand formula is recovered.

  6. Buttress thread - Wikipedia

    en.wikipedia.org/wiki/Buttress_thread

    In oil field tubing, buttress thread is a pipe thread form designed to provide a tight hydraulic seal. The thread form is similar to that of Acme thread [10] but there are two distinct threaded portions of differing diameters and profiles, the larger having a wedging profile, with a tapered sealing portion in between the larger and smaller diameters.

  7. With high probability - Wikipedia

    en.wikipedia.org/wiki/With_high_probability

    In mathematics, an event that occurs with high probability (often shortened to w.h.p. or WHP) is one whose probability depends on a certain number n and goes to 1 as n goes to infinity, i.e. the probability of the event occurring can be made as close to 1 as desired by making n big enough.

  8. Risk matrix - Wikipedia

    en.wikipedia.org/wiki/Risk_matrix

    The values on the risk axis were determined by first determining risk impact and risk probability values in a manner identical to completing a 7 x 7 version of the modern risk matrix. [7] A 5 x 4 version of the risk matrix was defined by the US Department of Defense on March 30 1984, in "MIL-STD-882B System Safety Program Requirements". [8] [9]

  9. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    Diagram showing the cumulative distribution function for the normal distribution with mean (μ) 0 and variance (σ 2) 1. These numerical values "68%, 95%, 99.7%" come from the cumulative distribution function of the normal distribution.