Thank you for taking the time to leave us a review! Even bad ones are an opportunity for improvement. I wish you had left a way for us to reach out to you to see what about them made them not useable for your purposes, but you left the review as a guest, so hopefully you'll reach out to us either by phone (941-451-7357) or by email (sales@usreloadingsupply.com). The product description includes information about these mixed fired primers, but perhaps you can suggest a better way for us to describe the product for future customers. If you'll reach out to us, we'll see what we can do to help get you something more suited for your purposes.