Abstract: The practice projectile of this invention has a variable projectile range when fired from the barrel of a firearm. The projectile comprises a shell body portion having a front end section and a rear end section and includes an outer surface, an inner gas-conveying passage, propellant gas ingress openings and propellant gas exit openings. The outer surface includes an outer, caliber section which contacts the inside surface of the barrel out of which the projectile is fired. The outer caliber section is located intermediate the front and rear end sections. The inner gas-conveying passage extends between the front end and rear end sections. The propellant gas ingress openings are located in the rear end section and openly connect the rear end section of the inner gas-conveying passage to the outside of the shell body. The propellant gas exit openings are located in the front end section and openly connect the front end section of the inner gas-conveying passage to the outside of the shell body.

Abstract: A locking device for selectively locking and releasing a rope or a similar elongated, flexible element comprises a channel-shaped frame and a clamping member which is provided with a handle and is mounted swingably within the frame. The clamping member cooperates with a rope abutment surface defined by the bottom wall so as to clamp the rope, when the clamping member is swung in one direction by means of the handle, and so as to release the rope when the clamping member is swung in the opposite direction. In order to render it possible to arrange the handle in a convenient, protected position within the channel-shaped frame in the rope releasing as well as in the rope locking or clamping position of the clamping member, the clamping member and the handle are separate parts, each of which are independently swingable about a common axis, and the clamping member and the handle may be releasably interconnected by means of releasable coupling means, which may comprise a locking pawl.