02-09-2012, 03:47 PM
Bill, could you weigh-in on the benefits of Carpenter 158, 8620, and 9130, and maybe others that you know about that would be the best alloys for the AR15/Grendel bolt? I haven't met many people that can discuss the details from an engineering & metallurgy perspective like you, since there are so many machinists out there with different opinions, but not enough engineers who can explain this in the firearms community.
