A method of supervising the safe carrying of firearms establishing rules for the situations where live ammunition is allowed to be in the chamber of the firearm. A supervisor checks that a dummy round is in the chamber of the firearm before the supervised person goes on duty outside of direct supervision. The dummy round is designed so that it records occasions when it is removed from the chamber. The recording is designed to last until checked by the supervisor. In some cases the dummy round undergoes changes that make the recording. In other cases the dummy round keeps count of the number of times it is removed from the chamber. In still other cases the dummy round communicates with a device which makes the recording. In each of these cases the system of supervision insures that live ammunition is only chambered when appropriate.

A system, device, and method for measuring the temperature of a chambered projectile within a firearm are provided. A test ammunition round may include a projectile, a sleeve, and a case including a first end coupled to sleeve, and a second end coupled to the projectile. A thermocouple may be located within the projectile, and an electronic coupler may be coupled to the thermocouple, and extends through the case and the sleeve and exits the sleeve through a slot for coupling to a data acquisition system.

A system, device, and method for measuring the temperature of a chambered projectile within a firearm are provided. A test ammunition round may include a projectile, a sleeve, and a case including a first end coupled to sleeve, and a second end coupled to the projectile. A thermocouple may be located within the projectile, and an electronic coupler may be coupled to the thermocouple, and extends through the case and the sleeve and exits the sleeve through a slot for coupling to a data acquisition system.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

An indirect fire mission training round includes a projectile training shell having an outer periphery, a proximal end, and a distal end, the proximal end defining an interior chamber. The projectile training shell is configured to be inserted within a cavity of a projectile firing instrument. The round includes an interlock member configured to securely receive a proximal portion of a subsequent training round within the interior chamber of the projectile training shell. The round includes a resistance brake extending outward from the outer periphery and configured to contact a wall of the cavity of the firing instrument and provide resistance that secures the projectile training shell at a position within the cavity. The resistance break is selectively disengageable such that the position of the projectile training shell is adjustable.

A weighted body adapted for insertion into an existing gun magazine shell approximates the weight and/or density of live ammunition cartridges. The size and shape of the body allows for insertion down and into the slot at the top on the magazine, pressing down on the spring, with a sliding retainer stop or other feature to maintain the weight in position, filling or partially filling the internal volume of the magazine with the weight. The integral slide retainer stop attached at the top of the device is then moved or slid by the operator into a position that locks the weight into the magazine so it cannot pop back out due to spring pressure and will not interfere with other workings of the gun slide or receiver. A plurality of color-coded stops may be provided for use with the same or different weighted bodies corresponding to different calibers of ammunition.

A weighted body adapted for insertion into an existing gun magazine shell approximates the weight and/or density of live ammunition cartridges. The size and shape of the body allows for insertion down and into the slot at the top on the magazine, pressing down on the spring, with a sliding retainer stop or other feature to maintain the weight in position, filling or partially filling the internal volume of the magazine with the weight. The integral slide retainer stop attached at the top of the device is then moved or slid by the operator into a position that locks the weight into the magazine so it cannot pop back out due to spring pressure and will not interfere with other workings of the gun slide or receiver. A plurality of color-coded stops may be provided for use with the same or different weighted bodies corresponding to different calibers of ammunition.

A firearm malfunction training device and method include a blank malfunction round that simulates a T3 malfunction and allows a realistic clearing protocol during the training. The malfunction round size and shape generally mimic the corresponding live round, so that malfunction round moves like the live round through the magazine. However, the malfunction round has a front end/portion that is oversized in diameter and does not fit properly or fully through the firearm breech, to jam the firearm loading mechanism at the breech. Preferably, the malfunction round also has a conical rear region radially-undersized relative to the live round casing, whereby the malfunction round leaves the magazine when the magazine is stripped from the firearm to start the clearing protocol. The enlarged front end and undersized rear region effectively simulate, and provide a realistic protocol for identifying, clearing and, correcting, a T3 malfunction.