Garden of Eden, a few days later.

Machining sector, research room.

With a "snap", in a ball of flames, the extremely strong alloy shell shattered again, and Richard shook his head with a little disappointment.

This has been his many experiments, solving some problems, but it got stuck in the material of the cartridge case.

The shell is filled with spell salt, an ultra-high-energy material with a destructive power far greater than that of conventional explosives, even if it is an alloy shell, it can still shatter. In this case, not only will the cartridge case not be able to exit during firearm shooting, but it will also leave metal fragments in the barrel, and in severe cases, it may explode in the case of subsequent bullet shooting.

If you want to solve it, it is not that there is no way, such as reinforcing the thickness of the bullet case and replacing it with a stronger alloy material.

But this will inevitably increase the size and weight of the bullet, if a bullet is the same size as a shell, then what bullets are needed, wouldn't it be easier to make shells directly?

Richard sat in front of the processing table in the research room, tapped the top of the processing table with his fingers, making a "pop pop" sound, and kept thinking.

What he desperately needed right now was a lightweight, extraordinarily strong metal material to make the shells of spell bullets. But this kind of material is difficult to find, or it is difficult to make it if it meets the requirements.

So what to do?

Are you going to be stuck here?

Richard thought for a long time, then suddenly he raised his eyebrows, and said to himself, "Isn't it, a bit of a bull's horn? If a lot of metal can't meet the requirements of spell bullets, then it's not good to use cartridge shells." ”

Yes, without cartridge shells.

Shellless bullets!

The bullets in this world, if classified according to their functions, can be divided into ordinary bullets, double warhead bullets, armor-piercing bullets, tracer bullets, incendiary bombs, explosive bombs, empty cartridges, force-loading bombs, and signal bombs...... And so on and so forth.

But if you divide it according to the presence or absence of shells, it is very simple, there are only two kinds - shelled bullets and shellless bullets.

Most of the bombs that are popular on the planet are shelled bombs, but according to history, the first ones to appear are caseless bombs.

Shellless ammunition refers to the design of ammunition in which the cartridge case is abandoned, and the bullet is directly charged into a solid block, connected or containing the warhead.

In the early days of firearms, during the American Civil War, when front-loading smoothbore guns were popular, in order to increase the rate of fire and simplify reloading, people loaded propellants and primers into paper shells together. When fired, the paper shell burns together with the propellant, and there is no need to throw the shell, which is the prototype of the caseless bullet.

Later, firearms continued to develop, and for reasons such as reliable performance, shelled ammunition slowly replaced shellless ammunition. However, after World War II, the United States, Germany and many other countries have invested a lot of energy in the research of caseless bullets.

This is because caseless bullets have many irreplaceable advantages over shelled bullets.

The caseless bullet developed after World War II is not a paper shell bullet during the American Civil War, but a certain proportion of combustible residue-free adhesive is mixed into the propellant, and a complete column with a certain strength is first made. Then, at the end of the medicine column, the warhead is fixed, and the primer is fixed in the other line, and the final production is completed.

The biggest advantage of this is that it is small in size and light in weight, which can be reduced by more than half. At the same time, because of the small size, light weight, no need to throw the shell and other reasons, in the shooting system, the rate of fire will be greatly improved, and the recoil will be greatly reduced.

For example, the G11 caseless rifle developed by the influential German company HK can reach 600 rounds per minute for continuous fire. If it is three extremely fast bursts, the short-term rate of fire can be as high as 2200 rounds / min, which means that in 0.08 seconds, three bullets can be discharged in turn. Because of the extremely small recoil, the impact points of these three rounds are very concentrated and the accuracy is extremely high, far exceeding that of ordinary rifles firing shelled bullets.

Of course, shelled bullets also have many disadvantages, otherwise the popular ones would not be shelled bullets.

First of all, it is more dangerous in terms of preservation and transportation, after all, it is a column structure, which is not as strong as a metal bullet case, and it is easy to break and explode when it is collided.

And once it explodes, it is surrounded by bare pillars of medicine, and the consequences are unimaginable.

In addition, there is the problem of spontaneous combustion of propellants.

Generally speaking, when a shelled bullet is thrown into the shell, it can take away part of the heat generated by the bullet after excitation, reducing the temperature of the chamber. Caseless bullets do not need to be thrown into the shell, naturally there is no such effect, and if you shoot continuously, the chamber will continue to heat up, and finally it will become very hot.

The caseless bullet has no protection of the cartridge case, the propellant is directly exposed to the outside world, and the temperature of the chamber is too much, which is easy to automatically ignite the propellant, causing spontaneous combustion and misfire.

However, in Richard's view, these problems are not so much of a problem.

For example, when it comes to preservation, he can completely save the ammunition in the space iron ring and take it out when he needs it, which is convenient enough and doesn't have to worry about collision at all.

If the temperature of the chamber is too high, a cooling system can be made to solve it. It doesn't need to be as troublesome and complicated as water cooling or air cooling, just use the magic pattern to simulate the spell effect of the water ice branch of the plastic energy class. After all, the bullets have all been upgraded to spell bullets, and it is only natural that firearms have been upgraded to spell guns.

In that case......

Richard stood up and got busy.

......

In the blink of an eye, many days later.

Or the Garden of Eden.

The spell testing ground in the Garden of Eden.

After the tragedy of the last Alloy 237 test, Richard learned from his experience and completely revamped the spell testing ground.

One of the biggest aspects of the renovation was the reduction of the overall height of the test site.

In other words, it was Richard who dug a huge pit and put the spell testing ground in it. In this case, the aftermath of the spell test, just getting out of the pit is a problem, even if it is successful, the power will be greatly reduced, and it will be difficult to bulldoze many buildings in the Garden of Eden again.

At this time, at the Eden Spell Test Ground, Richard stood at the bottom of the pit and looked more than thirty meters in front of him, where there was an alloy humanoid metal target, which was extremely strong.

After looking at it for a while, Richard pulled out a pistol.

The shape of this pistol is extremely rough, poking at the front is a long, thick barrel, and attached to the back is a small and delicate grip.

Besides, there is no more.

Well, there is no - no trigger, no firing pin, nothing, because Richard's new design of the caseless bullet is somewhat different from the caseless bullet on Earth.

The projectile is alloy 315, and there is nothing to say about this.

The pillar behind the projectile is made of spell salt and a special slime.

The slime's name is Lava Blood, derived from the secretion of a demonic toad, which is used by many wizards as a spell casting ingredient for fire spells.

This mucus is extremely viscous, and after solidifying, it is extremely hard, and after injecting a very small amount of mana or free energy elements, it can be burned in a super short time.

Richard combined this slime with the spell salt, and did not set a primer at all, intending to directly use the free energy element to excite it. In this case, the recoil will be lower, and if it is a fixed target, as long as the first bullet hits, there is a high chance that the subsequent bullets will continue to hit.

Of course, the most important thing for Richard was the power of the caseless bullet.

Richard continued to hold the pistol with a large barrel in one hand, and with the other he felt for a caseless bullet, opened a notch in the back of the pistol, pressed it in, and then closed it.

After getting ready, Richard raised his hand, held the spell pistol, and aimed at the humanoid metal target.

......