10 pounds of mountain grenade shotgun, which contained 148 pieces of 18.5mm caliber lead bullets. The shotgun does not need a fuse, and after being fired, the thin canister-like container bursts under the impact of strong kinetic energy, and countless projectiles are fired out of the container.

It's like a huge shotgun, and it can only be used for direct fire, and the effective range of the shotgun is the shortest of the above shells, less than 270 meters.

As for the power of the shotguns, you only need to imagine the scene when 148 smoothbore guns are firing at a small area at the same time.

The shotguns of ordinary 10-pound field guns are generally filled with iron bullets, which are much less than mountain howitzer shotguns in terms of quantity.

For example, under normal circumstances, the shotgun used in a 10-kilogram cannon is loaded with 27 iron bullets, while the shotgun used in a 10-kilogram howitzer is loaded with 48 iron bullets.

This is determined by the difference in the tactical tasks of the two types of artillery, the long gun is generally used to suppress the enemy's artillery and related personnel at a long distance, and pays more attention to the firing range, so the number of loaded iron shells is less.

Howitzers are used to clean up the enemy's living forces within the firing range, and in this era of dense formation combat, the shotguns fired by howitzers are more focused on single shot lethality, and not as much as the range of cannons.

After the shotgun, it's the grapeball, which is somewhat similar to the shotgun, except that the projectiles are larger and less numerous.

When grape bombs are fired, they usually use iron plates to isolate several layers of projectiles.

Grape projectiles have a much longer range than shotguns, but because of their scarcity, the lethality to personnel is not as good as that of shotguns, and the large particles of projectiles are mainly used against wooden buildings, such as siege vehicles, sea ships, houses, etc.

The grape bullets used in artillery that fire 10 kg of shells generally contain 9 projectiles and weigh about 13 kg in total.

The Chinese Army does not have a tradition of using grapeshot shells, which have only been slowly added to the army's combat system since the great expansion, and in the past, the navy and coast guard used such shells to destroy wooden buildings.

The grapeshot used earlier started with a 3-kilogram small cannon on the battleship, which contained 35 lead bullets with a diameter of 25 mm, and the firing range was about 350-450 meters.

The name grape bullet is derived from the early 25mm diameter projectile that resembles a grape.

Of course, so many of the above special shells can be used as killer weapons, rather than ordinary attacks, which shows that these killer weapons also have limitations. One of the biggest problems is that when firing these shells, there is a much more cumbersome reloading procedure than ordinary solid shells.

In general, when using fused grenades and shrapnels, a cylindrical butt must be tied to ensure that the fuse is facing forward when the shell is loaded from the muzzle into the barrel.

This seems to be just an additional part, but the material, radius, length, weight, etc. of the cartridge stock have strict requirements, and the butts used in different shells are different, but this is not the most troublesome, the most cumbersome, or the most commonly used time fuse for special artillery shells of the Chinese Army.

The largest amount of time fuse that the Huaxia Army is equipped with is a kind of wooden tube that is hollowed out in the middle and open at both ends, which contains a kind of slow-burning gunpowder with a very stable burning rate.

The most important thing is that the wooden tube is marked with a series of scales, and when using it, the gunner must first estimate the distance of the gun from the target.

When a single gun fires, the gun commander estimates the distance, and when the company-level troops fire uniformly, the officer carefully calculates.

Then, the gunner finds out the flight time corresponding to the distance and the type of shell from the artillery manual he carries with him, and then cuts off the corresponding length according to the scale on the fuse.

Next, the intercepted fuse is stuffed into the fuse hole left by the shell in advance, so that one end is exposed to the outside of the projectile body, and the other end is in contact with the gun in the projectile body.

Finally, the initial reloading is completed by placing the fuse in front of the barrel and inserting the shell into the chamber.

Since the diameter of the bore of the smoothbore pre-loading gun is generally slightly larger than the diameter of the shell, when the propellant is detonated, a part of the flame will seep out of the gap between the shell and the breech, run to the front of the shell, and ignite the end of the fuse exposed outside the shell.

At the same time, the shell also flew out of the chamber, and when the shell flew in the air for a certain period of time, the fuse burned to the position of the gunpowder in the shell, and ignited the explosives inside the shell, detonating the shell to kill the intended target in the vicinity.

When using special shells, it is also important to note that if the fuse is placed backwards in the breech, the fuse hole will come into contact with the propellant in the chamber.

Once this happens, then there is a high probability that the impulse of the propellant deflagration will hit the time fuse into the body of the shell, so that the shell will explode in the chamber.

Therefore, it is necessary to add a pair of butts between the shell and the propellant, and at the same time, in order to ensure safety as much as possible, even after adding the butt, it is necessary to avoid placing the fuse facing backwards.

Because this tube type of fuze is more troublesome to use, the arsenal is now also developing other different styles of fuzes.

Among them, the one that is preparing to phase out the tubular time fuse is a paper fuse, and the military factory uses different colors of paper to indicate different combustion speeds.

When using this paper time fuse, just choose a good color of paper. Cut off the corresponding length, stuff it into a wooden or metal screw-shaped fuse tube, and then screw the fuse tube into the fuse port on the shell.

The advantage of this is that although the length of the fuse may be different for each shell, the length of the fuse tube is fixed, which is much safer and more convenient for the artillerymen to use than to intercept the tube directly.

In fact, the new paper fuze is only the most suitable replacement for the mass production version of the tube fuse, in the research of the fuze, there are several other more high-tech, safer and more reliable fuzes in the military factory.

One of the most well-known is the No. 7 time fuse.

The No. 7 Time Fuze is a flat metal cylinder, about 4 cm in diameter and 1.5 cm thick, with obvious threads on its outer shell and time in seconds engraved on its surface.

When it is used, it is enough to make a hole in the required time scale and screw it into the fuse port of the shell, and the No. 7 time fuze, like other time fuses, is automatically ignited when the propellant is deflagrated.