.357 Magnum rounds. Left: Jacketed, Soft Point (JSP) bullet. Right: Jacketed, Hollow Point (JHP) bullet.

A hollow point bullet is a bullet that is designed to expand upon entering a target. The tip of the bullet has a pit, or hollowed out shape. When the bullet strikes a soft target the pressure created in the pit forces the lead around it to expand greatly into a mushroom-shape. This causes considerably more soft-tissue damage and energy transfer than if the nose had not been hollow. Most hollow points are partially "jacketed", that is, a portion of the lead bullet wrapped in a copper casing. 357 Magnum rounds showing the difference between JSP and JHP bullets. ... 357 Magnum rounds showing the difference between JSP and JHP bullets. ... 0. ...

The Hague Convention prohibits the use of expanding or fragmenting bullets in warfare (often incorrectly believed to be prohibited in the Geneva Conventions), the additional trauma caused being deemed unnecessary and inhumane. However, hollow points are one of the most common types of civilian and police ammunition, due largely to the reduced risk of bystanders being hit by over penetrating or ricocheted bullets. In fact, in many jurisdictions it is illegal to hunt game with ammunition that doesn't expand, and many target ranges also forbid full metal jacket ammunition. The Hague Conventions were international treaties negotiated at the First and Second Peace Conferences at The Hague, Netherlands in 1899 and 1907, respectively, and were, along with the Geneva Conventions, among the first formal statements of the laws of war and war crimes in the nascent body of international law. ... Development of the Geneva Conventions from 1864 to 1949 The Geneva Conventions consist of four treaties formulated in Geneva, Switzerland that set the standards for international law for humanitarian concerns. ... Boxes of ammunition clog a warehouse in Baghdad Ammunition is a generic military term meaning (the assembly of) a projectile and its propellant. ... In law, jurisdiction refers to the aspect of a any unique legal authority as being localized within boundaries. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Game is any animal hunted for food. ...

In slang, the hollow point bullet is also referred to as the dum-dum, and is similar to the cross point which uses two slits instead of a pit. Recreational shooters often refer to hollow points as "JHPs", from the common manufacturer's abbreviation for "Jacketed Hollow Point". Slang is the non-standard use of words in a language of a particular social group, and sometimes the creation of new words or importation of words from another language. ... Dum Dum is a group of small towns to the north west of Kolkata (Calcutta) in West Bengal state in India, and the location of Netaji Subhash Chandra Bose International Airport, formerly Dum Dum Airport. ...