Starline
New pistol brass cheap enough to skip sorting range pickup. Starline anneals between each draw for consistent metallurgy and makes its own primer pocket and flash hole tooling, with hand inspections at multiple stages.
Starline is the reason a pistol reloader can reasonably skip range brass entirely. At roughly twenty-seven cents a case, new single-headstamp 9mm costs little enough that an evening spent sorting, inspecting, and de-crimping mixed pickup may not be worth the savings, and you start from a known case capacity instead of a mixture of them. The manufacturing detail behind it is real: Starline anneals cases between each draw, which it credits for consistent metallurgy and optimal malleability, performs hand inspections and dimensional checks at multiple stages, and designs and manufactures its own tooling for the critical steps of forming primer pockets and piercing flash holes. Case length runs 0.748 to 0.754 inches. Two limitations come from Starline itself and are worth knowing before you buy: it does not recommend this brass in Smith and Wesson Shield pistols with near-maximum or +P loads, citing chamber support, and it does not recommend it in the S&W 929 or 986 or any titanium-cylinder revolver because ejection can be hard.
Add the Starline 9mm Luger Brass, 100 ct to your build and see how it enhances your platform.