You can either cast or swage bullets. Casting is pretty cheap, swaging requires heavy press and dies. At this point is not normally cost effective for an individual.
There are a lot of manufacturing facilities in Texas who could easily make jacketed bullets.
I have about 3000 .223 once fired. Mixed head stamps. Some mil crimped. Can get more easily enough. I have a bunch more loaded for everything from distance to varmints.
Was looking in to a set of casts for 180gr 10mm. Just haven’t gotten around into that madness yet.