mais browning dit
It is still assumed by many that the longer the shotgun barrel the farther the gun will shoot, the more effectively it will perform, and the more closely it will pattern. The facts are, however, whatever the gauge, barrel length has small effect on the velocity of the shot charge. With modern powders, the shot charge reaches maximum velocity after it has traveled a relatively short distance up the barrel bore. (So longer length of barrel does not make the pellets move faster or go farther.) Since the degree of choke controls the pattern of the shot at the target, proper barrel length is entirely a matter of desired weight, balance, and sight radius.
est aussi remington
Barrel Lengths
Contrary to some opinions, longer barrels do not shoot "harder" or "further" than shorter barrels. Barrel length is really a matter of personal preference and often depends on terrain and the type of game you are hunting. Generally, longer barrels aid in pointing and are often preferred for pass shooting waterfowl and shooting targets such as skeet, trap and sporting clays. Shorter, more compact barrels can provide faster handling and are often chosen for hunting upland birds, turkeys, deer with slugs and buckshot. Common barrel lengths include 20", 21", 23", 26", 28" and 30".
Pour résumer en quelques mots, Browning et Remington disent que la longueur du canon n'influence ni la vitesse, ni le groupement, ni la portée de la gerbe. Selon Browning, les chokes sont là pour ça, étant donné que les poudres modernes permettent à la charge d'atteindre une vitesse maximum après un parcours réduit dans le canon. Remington ajoute que les canons longs facilitent une visée précise alors que des canons courts ont l'avantage de la maniabilité, ce que Browning suggère aussi d'ailleurs.
Je me garderai bien d'apporter quelque commentaire que ce soit, même si je bois du petit lait ...
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