After the materials listed by Jacob arrived, he didn't waste more time and got to work.
Making a bullet was easy as well as difficult.
Easy because there are only five parts involved in a typical complete bullet, the cartage casing, the Primer, the projectile, the wad, and the gunpowder.
Difficult because selecting the suitable materials and amount for the aforementioned components and even a tiny mistake can result in either the bullet turning dud or turning it into a small bomb which will blow up your hand or, in some rare cases, the face!
In Silver Death's case, the Gun was completely capable of firing a Basic Type-1 bullet, even an Intermediate Type-1 bullet. In the former case, the Gun will have a long life period, while in the latter, it will only last for four or five rounds, just like the very first titan sniper rifle Jacob had ever made.
That's why it was so important to have perfect ammunition for a firearm, and it was the gunsmith's responsibility to make it happen.
