Pintle Pintle A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle pins securing casters in furniture. Pintle/gudgeon sets have many applications, for example: in sailing to hold the rudder onto the boat; in transportation a pincer-type device clamps through a lunette ring on the tongue of a trailer; in controllable solid rocket motors a plug moves into and out of the motor throat to control thrust. In electrical cubicle manufacture, a pintle hinge is a hinge with
Bolt action bolt, to turn and open the chamber. The entire reloading sequence was a more complex procedure than later designs, however, as the firing pin had to be independently primed and activated, and the lever was only used to move the bolt. Bolt-action firearms can theoretically achieve higher muzzle velocity and therefore have more accuracy than semi-automatic rifles because of the way the barrel is sealed. In a semi-automatic rifle, some of the energy from the charge is directed towards ejecting the spent shell and loading a new cartridge into the chamber. In a bolt action, the shooter performs this action