Yu Xiaotian himself was not at ease, he personally observed it carefully, and also touched it with his hands, because the temperature of the cannon body had risen a lot after the cannon was fired, and it was a little hot to the touch.

But after a careful observation, everyone breathed a sigh of relief, because this cannon was really very competitive, although it used a reduced charge, only filled with one and a half pounds of gunpowder, but at least it still withstood the pressure of the chamber, and the gun body as a whole did not appear any cracks, and successfully withstood the first test gun.

Yu Xiaotian felt a little satisfied, nodded and said, "This time I will change the medicine bag for two catties, and try again......"

There was another loud bang, and the gun carriage was once again pushed far by the recoil, and this time the gunner took a lesson and lowered the muzzle a little, and everyone could clearly see that the shell had hit the first mound a hundred meters away in an instant.

After the new mound of earth was shot, the earth and rocks flew all of a sudden, and even if a piece collapsed, the shells were blocked in the mound.

This time there was another cheer of cheers, and once again they swarmed to the side of the cannon, and once again they carefully examined inside and out.

The result of the second test of the two-pound charge was that the gun once again withstood such a test, and the gun body as a whole still did not have any problems, which also made everyone more confident.

Yu Xiaotian also breathed a long sigh of relief, because at this time, he could basically rest assured, after all, he used the method of casting the cannon with the iron fan, which avoided many drawbacks of the clay fan casting cannon, so that when the cannon body was cast, the quality itself was far more than the clay fan casting method, so under normal circumstances, there should be no problem with this cannon.

So next, Yu Xiaotian ordered to continue to test the gun, in addition to constantly increasing the charge, testing the bearing capacity of the artillery, but also constantly adjusting the gun carriage to test the range and accuracy of shooting.

A few gunners were unlucky, and under the orders of Yu Xiaotian, they kept clearing, loading, aiming, and firing......

In this era, playing with artillery is pure physical work, not to mention anything else, just the work of resetting the artillery carriage is absolutely heavy physical work, and after more than a dozen cannons, several gunners are basically tired and lie down.

Yu Xiaotian wanted to change people to continue, but the blacksmith Lei stopped doing it, and quickly stopped him and said: "The big boss is slow, I can't fight!" If this cannon is fired again, it will be red! Let's let this cannon rest! Otherwise, someone will die! ”

Yu Xiaotian only cared about being happy, and actually forgot about this stubble, there is no heat dissipation in the cannon in this era, it all depends on natural heat dissipation, if it is fired continuously, the temperature of the cannon body will be higher and higher, and it is not possible to continue to fight, and the medicine bag will just be filled into the gun chamber, because the temperature is too high, it will be ignited, so the gunner who operates the cannon will be unlucky.

So he had to nod his head and agree, let the gunners rest for a while, and by the way, let the gun cool down.

At the end of the whole day, the sound of the cannon at the shooting range of the test gun stopped from time to time, and basically did not stay idle, after a whole day of test guns, Yu Xiaotian finally got the first-hand information of this gun.

After repeated test firing, this cannon was better than expected, and the cannon could be loaded with two and a half catties of gunpowder, but in fact, they loaded it into four catties of gunpowder, and there was no explosion, which shows that the casting quality of this cannon is far greater than that of ordinary artillery.

And the accuracy of this cannon is also good, within 300 meters, it can basically guarantee to hit a target four meters by four meters square, it can control the effective range of about 500 meters, and it can also hit a target the size of a house at a distance of 500 meters, but when the hit rate reaches this distance, it is already very low.

When the four-kilogram medicine bag was full, Yu Xiaotian also did a test of the extreme firing range, and fired a cannon when the muzzle was too high to a 45-degree angle and fired half from the back, but the cannon actually shot the six-pound shell a full five miles away, and even exceeded the range of the shooting range, and directly hit the shell into the sea.

Such a range made everyone smack their tongues again and again, and they were all overjoyed, and they couldn't wait to hug this cannon and sleep.

As the leaders who led the troops, they were even more overjoyed, and they all surrounded and slapped the cannon body to show their love for this cannon, but of course the result was very sad, these guys forgot that the cannon fired a few more shots, and the temperature of the cannon body was already very high.

provoked Yu Xiaotian and couldn't help laughing, but this kind of longest-distance test has no meaning in actual combat, because if you hit such a distance, there is no more accuracy, where the shells can fall, it depends on luck, it is impossible to control at all, and if you hit the enemy ship or the enemy, you will simply let God take care of it.

So under normal circumstances, the effective firing range of this gun can only be controlled at about 400 meters.

Moreover, after such a high-intensity test, this cannon still remained intact as a whole and did not explode, which made Yu Xiaotian even more satisfied and wanted to twist his ass to celebrate.

After it was getting late, Yu Xiaotian ordered to rest on the spot and continue to test the cannon the next day.

That night, Yu Xiaotian made an exception and asked people to set up a banquet at the test site, entertained the test personnel, and also praised Lei Blacksmith and other cannon casting personnel, but he did not announce the reward measures on the spot, but said that they would be rewarded only after the test was over the next day.

Even so, it also made these gunners happy, and the next morning before dawn they got up again to prepare for the test gun.

On the second day of the test gun, people were no longer worried about whether the cannon would explode, and the medicine bag was replaced with a three-pound standard medicine bag, which was higher than the expected two-and-a-half-pound charge, but lower than the four-pound charge, which not only increased the power range of the artillery, but also ensured the safety of the artillery.

However, the next day's test gun was no longer to test the firing range, but to test the power of the artillery, and Yu Xiaotian had some dismantled old ship boards pulled from the shipyard and placed them on the shooting range, and the distance was set at one hundred and fifty paces, that is, about one hundred meters away.

Then use this cannon to bombard these old ship boards to test the penetration of the gun, and after repeated tests, it was concluded that when this gun uses a standard three-pound charge, it can effectively penetrate the ordinary plank with a thickness of six inches, even if it is very hard wood, it can also effectively penetrate the plank with a thickness of four inches, which is quite good, and it can be said that the power is more than enough to deal with ordinary ships.

Even against the current Ming army's naval division warships, they can do one cannon and one hole, effectively penetrating their hulls and causing great damage to the other side.

At the same time of testing, Yu Xiaotian also ordered the gunners and gunsmiths to improve the current gun mount according to the firing range of the artillery, modify the gun mount, calibrate the upper firing range, re-groove the gun mount, and divide it into several gears.

The test gun was carried out for about a week, in addition to the test gun on land, this gun was also loaded on Yu Xiaotian's ship Seawolf, and the test gun was carried out for two days, and even a broken ship was selected, pulled to the sea, as a target, and the broken ship was sunk alive.

Over the past few days, this cannon has fired more than 300 shells, and a group of gunners are tired and almost out of breath, but the results achieved have also made Yu Xiaotian particularly satisfied, at least, the quality of this cannon casting has made him completely relieved, after three days of high-intensity test guns, this cannon has no problems such as explosion cracks and cracks, and the gun body is still strong and can continue to be used.

Moreover, during the test gun, some design problems of the gun carriage were also found, and then it can be further improved to make the operation more convenient after the gun is installed.

With this kind of artillery, once it is put into production in large quantities, the strength of the Seawolf will once again be rapidly improved.

In order to ensure the shooting effect, when fighting people at sea, they could only approach the enemy ship and fire at a distance of dozens of meters, and they could not cause great losses to the other side.

However, once this new artillery produced by them is equipped in large quantities, they can open the distance between them and the enemy at sea to more than 100 meters or even two or three hundred meters to confront the enemy.

Therefore, after Yu Xiaotian finished the cannon test, he immediately rewarded Lei Blacksmith and Zhang Blacksmith and other craftsmen who participated in the cannon casting 1500 taels of silver, which was distributed according to the merit according to the different division of labor.

Such a heavy reward made these gunsmiths all overjoyed, and they smiled one by one, and hugged the bounty silver issued to them, only smirking, and estimated that for a few days when they couldn't sleep, they would have to sleep with the silver in their arms every night.

And for the people of the Sea Wolf Tribe, this incident also made them cheer, because they are not stupid, they know very well what the benefits of this new cannon are for them, who doesn't want them to be more powerful? With these cannons, who do they have to be afraid of? So the leaders, one by one, craned their necks and waited for the new cannon to arrive on their ships.

Even Li Dazui and Meng Fei stretched their necks, waiting for Yu Xiaotian to issue them a few such cannons, so that they could also be majestic.

Li Dazui even took Meng Fei to block Yu Xiaotian's residence with a shy face, relying on Yu Xiaotian to issue them with such artillery, but the request of the two of them was categorically rejected by Yu Xiaotian and drove them back to the barracks.