This may change on the SAL down the road. I have been communicating with their top ballistician all week on the 6.8 and they are changing their process and will have harder brass. This is a spin off from their 22 Valkyrie development. I might bring up the Grendel and ask about it. They might send me a dozen pieces to play with. If I hear more I will post up. I am slated for some of the 6.8 new production ans some of the 6.8 basic they are bringing out.
The best firearm for self defense? Any loaded one will do.