Here we have an example of a guy who doesn’t have to change his shooting routines. Seriously, casting your own bullets isn’t a Precision Shooter Thing, or a Crazy Prepper Thing; more and more it’s a Good Idea Thing.
This is a great run-down of some of the different casting, pouring, lubing and sizing methods used to manufacture bullets. Each one has its pros and cons, usually pro: it’s better, con: it’s more expensive.
But all of it’s less expensive, and usually easier to supply, than buying your ammo or bullets off the shelf. Here are the links to the various casting tools shown in the video.
mainejunker has a handful of other videos to help you roll your own ammo, so check out his YouTube channel.