Look up bore in Wiktionary, the free dictionary. Bore or Bores often refer to: Boredom Drill Boring (manufacturing), a machining process that enlarges...

The 8 bore (Commonwealth English), also known as the 8 gauge (American English), is an obsolete caliber used commonly in the 19th-century black-powder...

Look up boreal or Boreal in Wiktionary, the free dictionary. Boreal may refer to: Boreal (age), the first climatic phase of the Blytt-Sernander sequence...

The .410 bore (10.4 mm) is one of the smallest caliber of shotgun shell commonly available (along with the 9mm Flobert rimfire cartridge, and the less...

cross-section Boring, a mechanism of bioerosion Boring, Maryland, U.S. Boring, Oregon, U.S. Boring Lava Field Boring, Tennessee, U.S. Boring (surname) "Boring" (The...

Boral Limited is an Australian construction materials company manufacturing. Listed on the Australian Securities Exchange, it is majority owned by Seven...

Four bore or 4 bore is a black powder caliber of the 19th century, used for the hunting of large and potentially dangerous game animals. The specifications...

commonly referred to as bore in British English) of a firearm is a unit of measurement used to express the inner diameter (bore diameter) of the barrel...

a piston engine, the bore (or cylinder bore) is the diameter of each cylinder. Engine displacement is calculated based on bore, stroke length and the...

Small-bore refers to calibers with a diameter of .32 inches or smaller. It may also refer to small-bore rifle competition. The medium-bore refers to calibers...