Also, do you have gunpowder?
You need that to create new ammo. If you don't have powder but only parts, you can only convert ammo to a different type, not create new stuff.
I've not had a lot of gunpowder. Again, it's like rocking horse shit
I'm unloading weapons, scouring the areas, making ammo, dismantling guns I don't need/want. There's just not a whole lot around.
I have been in some big fights. 22 enemies was my most recent one
I would say the Internet is full of people saying they have plenty of ammo...but it's also full of people saying ammo is sparse