A variety of objects and methods of hunting determines the differences both in the numbers (size) of the shot used and in the methods of equipping hunting cartridges for different accuracy of shots. In some cases, a wide scree should be obtained from a gun at a short distance, or, conversely, a reliable shot at a long distance. In such cases, special “short-range” and “long-range” cartridges are equipped.
Increase and decrease the accuracy of shotgun cartridges for hunting rifles, short-range and long-range cartridges.
“Short-bore” cartridges have a reduced accuracy, they are used when shooting at short distances when standing in a bush, in a bush or when hunting from a dog for swamp and field game. There are several methods to reduce the accuracy..
Separation of a shot shell with cardboard wads.
For this, a cardboard pad is laid on the powder wad, and part of the shell is poured on it. The fraction for the shot should be set to the appropriate volume. Then a cardboard pad is sent to the shot, and the next part of the shell is poured over it, and so on. Typically, the projectile is divided into three gaskets. Gaskets for separating the projectile should be 0.2-0.4 mm less than the inner diameter of the liner, their thickness 0.5-0.8 mm.
Installation in a cardboard tube sleeve.
A cardboard tube of such a diameter is installed on a cardboard pad, sent to a powder wad, so that a shot shell in one layer fits between it and the inner wall of the sleeve. In this case, the height of the powder wads decreases, but not less than to 9–10 mm, which makes it possible to equip a shell of a fraction practically full in mass (27–30 g) by increasing its height. Cartridges equipped in this way give an even talus at a short distance of up to 10 meters.
Mixing fractions of different sizes.
To reduce the accuracy, it is sometimes recommended to mix the fraction through the number (No. 5 and 7, etc.) or on a cardboard pad sent to the powder wad, lay a number of large fractions (3-4 more numbers), and pour the required fraction on top of it numbers.
Using a cardboard cross.
A cross is made from cardboard, the height of which should be equal to the height of the column of the shot shell in the cartridge, and the width – to the inner diameter of the sleeve. This cross is mounted on a cardboard pad, sent to the powder wad. Then the shot shell is poured so that it evenly fills the formed cells. Cartridges equipped in this way do not always give a smooth scree.
Increasing the accuracy of shotgun hunting cartridges.
Usually achieved by one of the following methods.
The increase in the mass of the projectile with a constant mass of gunpowder charge.
Using a plastic cup for shot or wad with a container. A similar effect can be obtained by wrapping the shot shell with a strip of polyethylene or thick paper, the width of which strictly corresponds to the height of the shot column.
Filling of a shell of a fraction with bulk materials. Starch is best suited for this purpose, but bone flour, talcum powder and more can be used. On one cartridge consumed 2-2.5 g of starch. Fraction in the sleeve fall asleep in two steps. After half of the fraction falls asleep, a part of the starch is poured out and tapping on the sleeve ensures its distribution between the grains. They also do the second part of the projectile. Ensure that bulk materials are completely dry..
Pressing in the sleeve of the cartridge case with an asterisk without using a shot wad.
Based on the materials of the book “Fishing tackle and do-it-yourself hunting equipment. Production and repair “.