第一千七十六章 金属弹壳
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崇祯二十七年十一月初八，李植站在了靶场上，看着自己设计的新式步枪。最新地址ltxsba.info
其实枪的升级倒不是最大的，因为这把枪本质上还是类似于津王式步枪的后装式步枪。最关键的是如今这把步枪的子弹是完全不同的。
这把步枪已经开始使用全金属弹壳，使用整装一体子弹。
李兴走了过来，充满好奇地拿起放在旁边桌子上的两把备用枪。
曹余和其他的枪匠不敢阻拦李兴，只能任李兴在桌子上乱翻。
不过步枪看不出具体细节，李兴很快就被步枪旁边的子弹吸引，举起那铜壳子弹仔细端详起来。
水滴形的铜金属弹头，圆柱形的弹壳底部。整个子弹似乎是一体压制而成，浑身充满特殊的工业感。李兴把弹壳放平看了看，发现子弹尾部有一个小小的凹陷，里面是银色的东西，乍一看看不出那是什么东西。
李兴瘪了瘪嘴，赞道：”真漂亮！“
他拿着一颗子弹走到李植面前，问道：”大哥！这子弹是怎么设计的？和以前的纸壳子弹完全不一样啊！“
李植笑了笑，接过李兴的子弹，说道：”这新式子弹把弹头、底火和发射药装一起了。“
李兴眼睛一亮，说道：”底火在哪里？“
李植指着子弹说道：”底火在子弹的尾部，这子弹尾部凹陷进去的地方就装着雷酸汞。子弹装进枪膛后，枪膛尾部的击针就对准了这底火雷酸汞。“
李兴神情专注，看着那子弹的尾部。
李植说道：”子弹尾部的雷酸汞是易燃易爆击发药，雷酸汞前面则装着发射药。发射药是我们范家庄生产的无烟火药，如果步枪的击针一撞在底火上，雷酸汞就会受击爆炸，点燃前面的发射药。“
李兴用力点了点头。
李植接着说道：”发射药是装在弹壳里的，点燃后就会导致弹壳的急速膨胀。弹壳会飞出枪机。而卡在弹壳前方的铜质弹头受到挤压，就会和弹壳分离出来，高速射出枪膛。“
”射出枪膛的过程中和枪膛中的膛线挤压，弹头会高速旋转，让弹头在空中飞行的时候保持稳定。“
李兴吸了一口气，说道：”大哥，这太神奇了，这是把以前的子弹，发射药和底火三个东西结合在一起了。这样一来，士兵只需要一次装填就能完成从前需要三次操作才能完成的动作。“
李植点头说道：”就是这样。”
顿了顿，他又说道：”不过你不要小看这一个金属子弹。这子弹的生产技术含量极高。也就是我们如今有了大型精密冲床，能精确地把易爆不稳定的雷酸汞底火和发射药、弹头压在一起，紧紧结合在弹壳里面。“
”倘若我们的冲床的精度稍微有一点偏差，底火就会在压制过程中爆炸，引燃子弹形成事故。“
”也只有机床工厂如今使用电力驱动冲床，我们才能把冲床做到这样的精度。“
金属弹壳子弹的加工精度要求是很高的。在原先的历史上，在1860到1870年这一阶段才出现金属弹壳子弹。
李兴吸了一口气，从李植手上接过子弹，前后看了看。
”大哥，以前我们的子弹全是铅的。铅软，不会伤害膛线。如今我们用铜弹头，这铜质比铅硬，会不会导致步枪没打几枪膛线就坏了。“
”不会！“
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