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In modern archery, a compound bow is a bow that uses a levering system, usually of cables and pulleys, to bend the limbs. [1] The compound bow was first developed in 1966 by Holless Wilbur Allen in North Kansas City, Missouri , and a US patent was granted in 1969.
Estimates for the draw of these bows varies considerably. Before the recovery of the Mary Rose, Count M. Mildmay Stayner, Recorder of the British Long Bow Society, estimated the bows of the Medieval period drew 90–110 pounds-force (400–490 newtons), maximum, and W. F. Paterson, Chairman of the Society of Archer-Antiquaries, believed the weapon had a supreme draw weight of only 80–90 lb f ...
In addition there is an inner 10 ring, sometimes called the X ring. This becomes the 10 ring at indoor compound competitions, while outdoors, it serves as a tiebreaker with the archer scoring the most X's winning. The number of hits may also be taken into account as another tiebreaker. In FITA archery, targets are coloured as follows:
Target archery is the most popular form of archery, in which members shoot at stationary circular targets at varying distances. All types of bow – longbow , barebow, recurve and compound – can be used.
Modern compound bows usually also have a peep sight (rear sight) built into the string, which aids in a consistent anchor point, but this is not allowed for other bow types under World Archery. Modern compound [65] bows automatically limit the draw length to give a consistent arrow velocity, while traditional bows allow great variation in draw ...
On the equipment side, bow stabilizers have been used since the 1960s by tournament competitors and by bow hunters to counteract the torque of shooting the arrow. A tighter grouping may be achieved with such a stabilizer, which adds mass extending outward on a moment arm , usually mounted perpendicular to the bow riser, aligned with the arrow path.