"Phew! It's finally done!"

Chu Fan wiped the sweat from his forehead and sighed.

Looking at the shiny black steel ingot in front of him, Chu Fan couldn't help but smile with satisfaction.

"Is this Longgang?"

Chu Fan weighed it a few times and could already feel the hardness and flexibility of the steel ingot in his hand even before he tested it.

This feel is very similar to the steel in modern society in his previous life, but Chu Fan believes that the reason why this kind of dragon steel is listed as a strategic material by the Shenwu Empire must be more powerful than steel.

Not to mention that I already have such a rare thing as diamond carbon, many of the dozens of craft secrets have failed, which shows how difficult it is to forge.

The finished product on hand now is the secret recipe Lu Zhan received from the black market.

Sure enough, the black market in another world is yyds.

Chu Fan couldn't wait to build the barrel.

So he quickly forged a bunch of dragon steel ingots according to this successful secret recipe.

Looking at the weight in front of me, it is enough to build two barrels for testing.

Chu Fan then began to build the barrel. With the incredible existence of the Hundred Forging Platform, the building of the barrel became extremely easy.

As for the pipe diameter, Chu Fan was caught in a dilemma.

The first barrel he wants to build now is actually the kind of earthen cannon from his previous life.

The cannonballs still use iron balls. After the cannonballs are launched, they rely on the huge inertia of the iron balls to kill the enemy.

After all, the technology tree of primers has not been clicked yet, so the shells with delayed explosion cannot be produced for the time being.

But with the previous experience of having no conscience cannon, it was still possible to make custom-made cannon shells.

The thermal weapons war is actually about logistics.

If Chu Fan continuously builds gun barrels, each of which has a different caliber and the shells are not universal, it will put a huge pressure on logistics.

Therefore, the unified caliber of gun barrels must be thought about before taking action.

Even if the technology tree for delayed artillery shells is created later, it will not affect the subsequent replacement of artillery shells.

This is the development plan.

After thinking about it, Chu Fan decided to use the experience of his previous life...

152 Religion!

The 152mm caliber is a set of magical numbers.

Although in the history of artillery development, 88 has created more myths than 152.

There is a history of artillery being used as anti-aircraft guns and shooting down aircraft. The dazzling achievements of 88mm caliber artillery are everywhere.

But compared to earth cannons, the 88mm iron ball is a bit too small.

Its power is not even as powerful as building an 88mm hand cannon.

Therefore, before the primer was invented, Chu Fan decided not to touch 88mm for the time being.

After excluding this option, only 152 divine religions are left.

152 caliber, it has been baptized by real battlefields in its previous life, and its stability and power have been proven countless times.

Coupled with Chu Fan's feelings and other factors, Chu Fan finally set the caliber at 152mm, and gloriously joined the ranks of the 152 Divine Cult, the army of time travellers.

Although this world does not have the concept of mm as a unit of size.

But a long time ago, Chu Fan used his memory to create a ruler with mm units.

What he needs is not an accurate restoration of the 152mm of the previous life, but just a set of standard dimensions.

If all subsequent gun barrels and shells are made strictly according to the size of the ruler created by yourself, then all accessories can be universal.

This is the logistical concept of artillery fire.

Otherwise, like some countries that used IWC arms in previous lives, the war could indeed be fierce for a while at the beginning, but once the time dragged on, IWC arms would definitely not be able to defeat a party with a complete military production chain.

This was the first time Chu Fan used the Hundred Forging Platform to forge such a large object.

Therefore, as the Hundred Forging Platform heated up, the dragon steel ingots turned into a lava-like color, making Chu Fan's face turn red.

Even before Chu Fan got close, he could already feel its scorching temperature.

After a while, the Hundred Forging Platform forged a round barrel according to the shape and size set by itself.

Wait until the barrel cools down naturally and measure it with the ruler you made. Oh my god, it's exactly right.

The Hundred Forging Platform is truly a magic weapon!

Its production capacity is no less than that of completely replicating an item.

The barrel of the gun barrel is slippery, so it is also called the first generation smoothbore gun.

The rifling process should be developed later.

After all, we still don’t know whether the gun barrel can withstand the explosive power of the spiritual gunpowder.

In order to prevent the barrel from exploding, Chu Fan deliberately shot the rear of the barrel into the shape of the ancient red cannon, which was thicker and thicker than the front.

After all, since this shape exists, it naturally has a reason for its existence.

The so-called existence is reasonable.

Presumably this is the result of countless experiments by predecessors.

So Chu Fan reproduced it like this.

Rubbing the smooth barrel, Chu Fan seemed to be caressing his lover.

It took me many days of hard work to create this.

If it doesn't work, I'll probably have to start all over again.

Therefore, Chu Fan couldn't wait to get the barrel to the ground.

At this time, Chu Fan was the only one in the backyard nest.

He can then experiment without any scruples.

Because there is only a bare barrel, and the wheels are not attached.

Therefore, in order to prevent the muzzle from rising, Chu Fan used black spirit iron weighing 10,000 tons to fix the barrel.

Chu Fan was also worried that the barrel would be deformed by the pressure of the black spirit iron, so the black spirit iron above was specially made of small pieces.

Everything was ready, Chu Fan first tested the water with the custom-made gunpowder bag he had made before.

After the gunpowder package was stuffed into the barrel, Chu Fan used an iron ball made of ordinary black iron with a diameter of exactly 152mm and stuffed it in.

This was Chu Fan's first time tinkering with artillery.

Chu Fan also felt a little guilty.

So the leads are made very long.

After stuffing the spiritual gunpowder packets and cannonballs tightly, Chu Fan lit the fuse, then quickly fled behind an earthen fortress, quietly waiting for the fire.

boom!

The packet of spiritual gunpowder exploded, instantly shaking the earth.

And the sound was much louder than the heartless cannon outside the Demon Sealing Wall before.

Chu Fan was hundreds of steps away and felt his heart pounding.

A cloud of white smoke was emitted from the muzzle, and in Chu Fan's quick gaze, he also saw a tongue of flame ejected from the muzzle.

This is something slow people cannot see.

In the eyes of the fast Chu Fan, the artillery was like a slow-down shot.

After he saw the iron ball spraying out, he not only shot it out quickly, but the iron ball had already deformed as soon as it exited the muzzle.

The irregular iron ball drew an irregular parabola and immediately hit the dianthus forest heavily.

The huge inertia of the iron ball directly smashed more than ten dianthus.

Chu Fan hurriedly walked over to check, my dear, it took Xiang Batian a long time to chop off this dianthus.

The spiritual fire cannon only needs one shot to destroy it instantly.

This shows how powerful it is.

Moreover, the strength of the gun barrel did not live up to Chu Fan's expectations.

The barrel did not explode, it held on and did not crack.
Chapter completed!