This is a new caliber to me. Had not intended to do a 300BLK project as I already shoot competitively a few other calibers including 6.5C. So this was more intended to be a "I'm bored and feel like doing something different project. First off, the order arrived a day sooner than indicated on the USPS website. In short, excellent service. Second, even though the headstamps were mixed, all of the brass was in excellent shape. A few case mouths were dinged up, likely from full auto, but those will be resolved when they are run through the resizing die. All in all, am very happy with the customer service from Capital and the quality of the brass. I will definitely be ordering from them again .