Next, Lin Chuan had to go to the R&D center once a day to see the manufacturing progress of cast iron artillery.

Cao Jie, who was alone in the mansion of the Marquis of Hanzhong, suddenly found that Lin Chuan had become as busy as Cao Chong, and couldn't help but smile helplessly.

After the craftsmen of the R&D center worked day and night, the first cast iron cannon was finally born in the Hanzhong R&D center!

Lin Chuan, Chen Yuan, and a group of craftsmen in the R&D center who participated in the manufacture of cast iron cannons were all looking forward to what kind of power this cast iron cannon could burst out at this time.

"Are the matching solid projectiles ready?"

Lin Chuan asked Chen Yuan.

"Gunpowder and projectiles are ready, Lord Hanzhong!"

Chen Yuan immediately replied to Lin Chuan.

"Good! Then bring the cast iron cannon with projectiles and gunpowder, and let's go to the mine to test the cannon together! ”

Under Lin Chuan's orders, the craftsmen of the R&D center worked together to load the cast iron artillery onto the wagon and pull it to the mine factory.

In the mine factory, Master Lu, who was still supervising production, greeted Lin Chuan and Chen Yuan warmly after seeing them coming.

"Lord Hanzhong, Master Chen!"

"Master Lu, let the craftsmen working in the mine go down and rest first."

Lin Chuan didn't say too much to Master Lu, and only wanted to try the power of this cast iron cannon.

After Master Lu heard Lin Chuan's arrangement, he didn't ask the reason, and soon brought all the craftsmen in the mine to the mine factory.

"Very good, Master Lu, you can also watch the test gun!"

After the mine was cleared, Lin Chuan remembered that Master Lu was also a forger, so he called Master Lu to the mine to watch the test gun.

Master Lu came to the mine with a head full of doubts, Lin Chuan, Chen Yuan and others, and a total of cast iron cannons.

Next, the craftsmen of the R&D center began to erect cast iron cannons in the manner of Professor Hayashi Chuan, and then filled the barrel with gunpowder and projectiles.

After everything was ready, a craftsman from the R&D center holding a torch came to Lin Chuan and asked Lin Chuan: "Lord Hanzhong, the cast iron cannon has been loaded, are you here for this first cannon?" ”

"Okay, it's up to Ben Hou to fire this first shot!"

Lin Chuan took the torch from the craftsman of the R&D center, came to the side of the cast iron cannon, and then put the blazing torch on the lead of the cast iron cannon.

With the continuous burning of the lead, the hearts of the craftsmen of the R&D center such as Lin Chuan and Chen Yuan were also raised.

Master Lu, who had been silent on the side, also understood what the cast iron cannon that Lord Hanzhong Hou said at this time was.

The fuse finally burned out, and then everyone could only hear "Boom! "A bang!

The solid iron projectile, propelled by the burning gunpowder, left the barrel at great speed, flew towards the mine not far away, and then slammed into the hard rock!

Lin Chuan and the others waited until the smoke and dust cleared, and first began to check whether the cast iron artillery was damaged.

Under the careful inspection of Chen Yuan and a group of craftsmen from the R&D center, it was found that the cast iron cannon was intact at this time.

Master Lu also came up curiously, and under Master Lu's inspection, he did not find any cracks in the barrel.

Then the group went to the rock wall of the mine, looking for the projectiles fired from the cast-iron cannon.

"Found it! Over here! ”

A craftsman from the R&D center shouted as he pointed to a solid iron projectile half embedded in the rock wall.

Lin Chuan and the others immediately came to the craftsman's side, looking at the iron solid projectile embedded in the rock wall, and a great joy continued to brew in everyone's hearts.

"Hahaha, hahaha, hahahahaha!"

The next moment, Lin Chuan suddenly looked up to the sky and laughed, the development of cast iron artillery was a success at one time!

"Hahaha, it's a success!"

"It worked! It's a success! ”

"Hahaha, hahaha!"

Chen Yuan and other craftsmen in the R&D center finally vented their excitement and excitement at this moment!

Lin Chuan led everyone to jump and jump happily on the mine, and everyone finally calmed down after half a day.

The group returned to the cast-iron cannon, and the craftsmen of the R&D center began to clean the barrel in preparation for reloading the gunpowder and projectiles.

"This time, increase the loading amount, and add one percent more gunpowder!"

Lin Chuan said to the craftsman of the R&D center who was loading gunpowder.

The cast iron cannon has been successfully fired, and what Lin Chuan has to do now is to test the extreme performance of this cast iron artillery.

After hearing Lin Chuan's order, the craftsman of the R&D center for loading gunpowder added gunpowder to the barrel again.

"Boom!"

Moments later, the roar of cast-iron cannons rang out again in the mine.

Everyone came to the rock wall of the mine again, and found that this time the solid iron projectile had completely penetrated the rock wall.

Then after checking the barrel again and finding that there was no crack, Lin Chuan again ordered an increase in the charge of one percent.

In the following time, Lin Chuan and Chen Yuan led a group of craftsmen from the R&D center, and after repeated experiments, they finally found the maximum charge of this cast iron cannon.

And the maximum power of this cast-iron cannon can blast the rock wall of the mine into a shallow pit the size of a human head.

However, after an afternoon of repeated experiments, several small cracks had appeared in the barrel of this cast-iron gun.

For the sake of safety, Lin Chuan did not test the maximum range of cast iron artillery today.

Greatly encouraged, Chen Yuan and the craftsmen of the R&D center prepared to return to the R&D center to continue the improvement of cast iron artillery according to the experimental records.

It wasn't until the end that Master Lu, who had been accompanying him, said to Lin Chuan and Chen Yuan: "Lord Hanzhong Hou, Master Chen, the quality of the iron ore produced in the mine is not of the highest quality.

If you want to say that the iron ore produced is of high quality and easy to mine, it should be the iron mine near Yecheng.

If this cast iron cannon is smelted and cast from the ore of Yecheng Mine, it will definitely be more durable and durable! ”

After Lin Chuan and Chen Yuan heard Master Lu's suggestion, they couldn't help but be overjoyed.

"Hahaha, Master Lu said it well, Ben Hou didn't think about the quality of iron ore before!"

After Master Lu's reminder, Lin Chuan laughed.

"Master Lu, why don't you come to the R&D center to develop cast iron artillery together during this time?"

Chen Yuan also suddenly thought that Master Lu was an out-and-out forger, so he moved his mind to pull Master Lu into the R&D center.

After Master Lu heard Chen Yuan's invitation, he couldn't help but look at Lin Chuan.

"Master Lu, all the matters of the mine factory can be handed over to Master Xiao Lu to take care of.

At present, the improvement of cast iron artillery is the most important, so you can go to the R&D center with Master Chen to improve the cast iron artillery! ”

Lin Chuan thought for a moment, and then instructed Master Lu.

So Master Lu nodded and agreed to Chen Yuan's request, and after explaining all the matters of the mine factory to his son Master Xiaolu, he returned to the R&D center with Chen Yuan and the craftsmen of the R&D base with the cast iron cannon.