Just a note for your future reference. If you have Concealed Carry License trainers around your area, often they will sell range brass.
Trainees leave behind a lot of new brass. Our state has a requirement to demonstrate proficiency which I have personally witnessed to be a wonderful thing. At least we know they can hit 70% of 25 rounds into an 8 x 11 piece of paper when they leave. Gives one a little peace of mind. Anywayyy.......
I buy by the bucket and sort it all out. I've gotten TZZ, IMI, PMC, Rem, Win, Federal, UMC, Blazer, Sig, and a host of others hard to even identify. I separate out the Winchester because I happen to like that best. and use it for more critical stuff.
I load for eleven 9mm in my family (couple Sigs, couple Kahrs, couple Browning Hi-Power, three Springfields, a CZ, and a lonely Walther). Daughters, Sons-in-law, and now a granddaughter. Everything not Win and in as-new condition gets pitched into the communal pot in bags of 1,000.
I love my CCW guy! You can never have enough brass (or primers). If I don't like the feel for whatever reason, that bag goes bye-bye!.
Last, I try to duplicate the feel for factory carry ammo which for all happens to be Federal 124 gr HST standard loading. Not hot, not mild, just right. We pitch together and buy by the case.