I have two boxes of Remmy 7.5 small rifle primers; are these okay for use in an AR type rifle? Iirc, it's the 6.5s that will damage your firing pin. Am I remembering correctly? Also, would it be okay to use these inplace of SPPs as long as I rework my load from the start? Currently, my LNL is in disrepair currently so I will be awaiting replies for the next few days. Thanks, and it's great to be reloading again!