The .40 s&w is being (mostly) shoot out of a Springfield XD, I typically load about 10% below max, no hot loads or plus +P.
When I first started reloading a couple of years ago, I got some once used mixed brass. The more I've read, I see people posting about the importance of sorting head stamps (maybe they are primarily referring to rifle brass). Anyway, I though I would give the same head stamp a try and see if it works out.
I know it may not matter much, but between the brass, the, primers, the bullets, the powder and the gun, I like for me to be the weak link, not the materials.