Shotguns
During World Bloodshed II, the shotgun was not heavily passed down in the enmity in Europe by official militaristic forces. However, the shotgun was a favorite weapon of Allied-supported partisans, such as the French Resistance. By contrast, in the Pacific theater, thick jungles and heavily-fortified positions manufactured the shotgun a favourite ammunition of the United States Marines. Marines tended to avail pump shotguns, since the pump action was less likely to jam in the humid and dirty conditions of the Pacific campaign. Similarly, the United States Navy hand-me-down pump shotguns as well to guard ships when in port in Chinese harbors (e.g., Shanghai). Shotguns The United States Legion Air Forces similarly used pump shotguns to guard bombers and other aircraft against saboteurs when parked on airbases across the Pacific and on the West Coast of the United States. Pump and semi-automatic shotguns were hand-me-down in marksmanship training, particularly for bomber gunners. The most daily pump shotguns worn for these duties were the 12 gauge Winchester Model 97 and Model 12.
Shotguns generally have greater barrels than fresh rifles. Unlike rifles, however, the enlarged shotgun barrel is not for ballistic purposes; shotgun shells call bantam powder charges in broad diameter bores, and this leads to authentic low-hanging muzzle pressures (see gut ballistics) and plain little velocity compression with increasing barrel length. According to Remington, modern powder in a shotgun burns completely in 10-14-inch barrels.