Wednesday, 23 November 2011

Shotgun Rounds and Olympic Shooting Tickets


Shot shells are loaded with different sizes of shot depending on the target. For skeet shooting, a small shot such as # 8 or #9 would be used, because range is short and a high density pattern is desirable. Trap shooting requires longer shots, and so a larger shot, up to #7½ would be desired. For hunting game, the range and the penetration needed to assure a clean kill must both be considered. Shot loses its velocity very quickly due to its low sectional density and ballistic coefficients see external ballistics. Small shot, like that used for skeet and trap, will have lost all appreciable energy by 100 yards or meters, which is why trap and skeet ranges can be located in relatively close proximity to inhabited areas with negligible risk of injury to those outside the range.
Birdshot sizes are numbered similar to the shotgun gauges; the smaller the number, the larger the shot. Generally birdshot is just called "shot", such as "number 9 shot" or "BB shot". A useful method for remembering the diameter of numbered birdshot is simply to subtract the shot size from 17. The resulting answer is the diameter of the shot in hundredths of an inch. For example, number 2 shot gives 17-2 = 15, meaning that the diameter of number 2 shot is 15/100 or 0.15". B shot is .170 inches, and sizes go up in .01 increments for BB and BBB or Pellets.
Larger sizes of shot, large enough that they must be carefully packed into the shell rather than simply dumped or poured in, are called "buckshot" or just "buck". Buckshot is used for hunting larger game, such as deer hence derivation of the name, and also in riot shotguns and combat shotguns for defensive, police, and military use. Buckshot size is designated by number, with smaller numbers being larger shot; sizes larger than "0” are designated by multiple zeros. "00" is the most commonly used size.
   A standard 00 buck shell holds 7-9 pellets. Two types of 00 buckshot are commonly available from suppliers: regular 00 buckshot shells and reduced recoil shells favored in law enforcement or home defense use. Low recoil 00 buckshot allows the shooter to make fast follow-up shots, which may be needed in a combat situation, but are not typically required in hunting where the main goal is to cleanly take out the game with a single shot. It's also useful as a stepping stone for shooters who are not yet used to the recoil of full-power shells.
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