.308 - 7.62 brass at Berry's
http://www.berrysmfg.com/product-i14896-c6-g8-b0-p0-308_762x51_Pulled_Primed_Brass_500ct.aspx
Picked some up the other day - great stuff at a great price for these days......
Looking into building a rifle for this class - are there many people using the .223/5.56? Most of what I've seen is .308. Any leads to the "pros" that use this cartridge would be appreciated, thanks....