/kloc-what are the concepts of 0/25mm armor-piercing gun and 88mm smoothbore gun?

Guns are divided into smooth-bore guns and smooth-bore guns. By the way, the army used to call guns without rifling guns smooth-bore guns. In fact, many rockets, mortars, etc. It's a musket. Domestic tanks use 125mm sliding hall guns to fire armor-piercing projectiles, which is what you call armor-piercing guns. Firepower system: 125mm sliding hall gun is basically the standard configuration of China tank 90 series. The maximum armor-piercing thickness of Wujin projectile is 850mm at a distance of 2000 meters, and the fuel-poor armor-piercing projectile is1150 mm. Unfortunately, the thickness of the former main armor of American M 1A2 is 1 100 mm ... and there is about 80% probability to break its former main armor. Remember, this is a gap, not a hole. In order to penetrate, the armor-piercing thickness should be at least 100 mm, so that the projectile can detonate at a close distance of 30-50 cm from the car body. High explosive energy can be used to impact and seriously hurt the soft electronic instruments and personnel in the car. And the maximum armor-piercing thickness of Russian 80u is 850 mm, 88mm and 88 mm sliding hall gun? The 88mm sliding hall gun equipped by German Tiger King made it impossible for the allied tanks at that time to parry the tiger tanks equipped with the 88mm diameter 88mm KwK 36 L/56 main gun, and the barrel length was 56 times of the caliber. The following are the armor-piercing thicknesses of different types of ammunition at different distances:

Bomb seed

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100m120mm170mm 90mm

500m110mm155mm 90mm

1000m100mm138mm 90mm

1500m91mm122mm 90mm

2000m 84mm110mm 90mm

The 88mm KwK 36L/56 gun has a high ejection speed, and the projectile moves along a parabola after ejection. This not only invisibly increases the power of the shell, but also gives more room for error. Because even if the gunner miscalculates (maximum) 200 meters, the shell can still hit the target. Because aiming too high will only deviate from the scheduled hit point by less than 1 m, which is nothing for a tank with a height of 3 meters. According to the operational report, the best engagement distance is 800 ~ 1200m. As for the hit above 2000m, it can basically be regarded as good luck.