I have read all or most of the previous posts on the 7mm SAUM. Most of them are older. I am currently considering building a rifle in this caliber. I do have a couple of concerns. I see that most rifle manufacturers have stopped building rifles in the cal. This concerns me that brass will soon be hard to come by. Right now it is available from Norma and Nosler as well as loaded ammo. Is this a dying round? The rifle I have currently is a 270wsm that I am going to rebarrel. Should I just stick with the 270 since it has a better following and should stick around longer? Or should I be looking at something different? Any help with this would be greatly appreciated.