Using completely new materials to make bullets is just one way to enhance their performance.
Apart from starting with materials science, another approach is structural engineering, such as improving the structural design of firearms to increase their airtightness, or modifying barrel length and changing bullet caliber.
However, structural engineering is not an easy path for Su Yu. With only a handful of firearms in his hands, attempting to modify their structure would be no different from building a new firearm from scratch.
Chapter 134