My 6.5LRM uses 7LRM brass. It even uses a 7LRM Hornady custom die set with different bushings and a 6.5 expander....and the pic of the chamber stamp/engraving? I listened to Aaron on the podcast and he implied that none of their rifles they were playing with left the shop. He made it very clear that he did not want a repeat of the issues with the LRM and getting it SAAMI approved. I will listen to it again as I remember the name having the word short in it.