Besides better subsonic and short barrel performance the 300blk has other attributes.
Only requires barrel change,NOTHING else. 300blkis easy to reload,you can make brass from 5.56 brass easily- therefore you will always be able to make rounds for it. There are many new factory rounds being produced now that are supposed to awesome performers. Look at the 110ttsx round for example.
The 6.8 wonthave the chance to grow like the 300 will due to the freedom groups size.
The biggest downside to the 6.8 is that there's more efficient rounds that fit in the ar platform if all your after is long range hunting. The 6.5 grendel and the Remington 30 ar are designed more for hunting.
Only requires barrel change,NOTHING else. 300blkis easy to reload,you can make brass from 5.56 brass easily- therefore you will always be able to make rounds for it. There are many new factory rounds being produced now that are supposed to awesome performers. Look at the 110ttsx round for example.
The 6.8 wonthave the chance to grow like the 300 will due to the freedom groups size.
The biggest downside to the 6.8 is that there's more efficient rounds that fit in the ar platform if all your after is long range hunting. The 6.5 grendel and the Remington 30 ar are designed more for hunting.