Does anybody have any experience with the relatively new .300 Blackout cartridge? I am looking to build an upper chambered for a larger round than the 5.56/.223 to hunt whitetail with and the .30 RAR is out of my budget. I read an article in the January 2012 G&A edition (yes the January edition is already out). on the .300 Blackout round and after browsing the internet it seems that I can replace the barrel on one of my current AR's since the .300 Blackout uses the same BCG and magazines as a 5.56.
Just wondering if anybody has any range experience with both sub-sonic and super-sonic rounds...as far as distance and accuracy.