I thought I was looking at the "build your own" forum earlier and saw a posting looking for interest in 6.8 SPC uppers, but now I can't find the damn topic.  Anyone seen it/know where it is?

Speaking of 6.8 SPC,  what's the opinion on when less expensive ammo is going to be available?  Is this cartridge going to end up being the 10mm auto of the AR-15 realm?  I wonder if I'd just be ahead to get a 7.62x39 upper, that ammo is cheap as dirt and will always be available....

Never mind, I found it:

http://www.ar15.com/forums/topic.html?b=7&f=22&t=221874

I was looking in the wrong forum.