Nitro express is a special type of bullet that hunters use to shoot really big animals like elephants, rhinos, or buffalos. Imagine if you have a super strong water gun that can shoot water really far and really fast. That's what a nitro express bullet is like, but instead of water, it shoots out a really big and powerful bullet that can take down those big animals.
But these bullets are not like the normal ones you see in movies or on TV. They are specially made to be stronger and more powerful. They are made with special gunpowder and have a lot more gunpowder than regular bullets. This gives them more power and makes them shoot faster and farther than regular bullets.
These bullets aren't just used by hunters, though. They were first used by soldiers a long time ago in battle. They were very helpful because they could shoot through armor and shields that regular bullets couldn't.
So, nitro express is a type of bullet that is extra powerful and is used to take down big animals or shoot through armor. It's like a super strong water gun, but instead of water, it shoots bullets that are super strong and powerful!