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Military use of combat shotguns through the 20th century has created a need for ammunition maximizing the combat effectiveness of such weapons within the limitations of international law. 12-gauge has been widely accepted as an appropriate bore diameter to provide an effective number of projectiles within an acceptable recoil. Early 12-gauge ...
Fiocchi started manufacturing cases with primers suitable for reloading; in the early 1890s production was extended to complete cartridges loaded with bullets or shot. At the same time, Fiocchi gave up the production of black powder, as it was no longer profitable. At the beginning of the 20th century, Fiocchi diversified and began making snap ...
The 20-gauge shotgun, also known as 20 bore, is a type of smoothbore shotgun. 20-gauge shotguns have a bore diameter of .615 in (15.6 mm), while the 12-gauge has a bore diameter of .729 in (18.5 mm).
Early ammunition had a 4-digit year with the first 2 digits (thousands and hundreds) at 9 o'clock and the second 2 digits (tens and ones) at 3 o'clock. Ammunition with an E at the 12 o'clock position (which stands for Ersättning, or "Substitute") have a bimetallic cartridge-case (brass-clad steel) due to wartime economy measures during World ...
A view of the break-action of a side-by-side, and an over-and-under double-barrelled shotgun, both shown with the action open. For most of the history of the shotgun, the breechloading break-action shotgun was the most common type, and double-barreled variants are by far the most commonly seen in modern days.
Early shotgun cartridges used brass cases, not unlike pistol and rifle cartridge cases of the same era. These brass shotgun hulls or cases resembled large rifle cartridges, in terms of both the head and primer portions of the cartridge, as well as in their dimensions.
Some 7.63mm Mauser ammunition is still manufactured by Fiocchi, Sellier & Bellot, and Prvi Partizan. Reloadable boxer-primed cartridge cases can be formed from 9mm Winchester Magnum by simply resizing and trimming. Alternatively, they can be formed from 5.56mm NATO with the additional step of inside neck-reaming.
Modern ammunition manufacturers have recently re-discovered Buck and Ball type shotgun loads, and have been manufacturing defensive shotgun ammunition which largely duplicates the properties of the historical loads. As an example Winchester's PDX1 12 gauge load features three 00-buck copper plated pellets over a one-ounce slug. Similar ...