Bowling ball to skid longer before reacting (hooking). Reactive cover stocks finishes include "matte" (aggressive reaction), "shiny" (longer skid distance than matte finish), "pearl" (greatest skid distance among reactive cover stocks), and "hybrid" (combination of skid distance and back end reaction). Duckpin balls weigh each, with up to three balls delivered per round (or "frame") of bowling for one bowler. The duckpin ball has a maximum diameter of , slightly larger than a candlepin ball but, like a candlepin ball, contains no finger holes. Duckpins are correspondingly shorter and lighter than their ten-pin equivalents and it is more difficult to knock them
Ten-pin bowling and trick shot challenges) of the complex technique required to bowl successfully and compete at higher levels. However, the debate over whether bowling should be considered a "sport" or a "game" continues. A distribution table for scores using traditional scoring in ten-pin bowling may be found at http://www.balmoralsoftware.com/bowling/bowling.htm. It shows that there are just under 6 possible ways to obtain a score, ranging from 1 way of getting zero (20 gutterballs in a row) to 1 way of getting 300 (12 strikes in a row). Ten-pin bowling Ten-pin bowling is a sport in which a player (called a "bowler") rolls