Might check bluecollarreloading.com, they had a solid stock last I looked. I picked up a few hundred a couple weeks ago, but looked again recently for someone else. Price wasn't amazing, but given the times it sure wasn't bad.
Yep, I was really happy with them. First found them for some brass I was seeking, then once I thought to browse bullets I had a 2nd order only a day or two after the first. Both arrived relatively quick. They had a lot of the Barnes 110 TAC-TX that a lot of 300 BLK shooters like for hunting or defense as well.