6.5 Grendel vs 6.8 SPC

[Belt Fed]

What's the main difference in the two?  I have a grendel and love it but ammo is a no go. i just looked and so is the 6.8. i thought about getting a 6.8 for hunting. don't both have the same cartridge just a different sized bullet. is there any ballistic advantage of one over the other? especially in terms of taking down deer with.

[dpete]

The grendel's parent case is the 7.62x39 Russian. The 6.8 is based off of the 30 Remington.  Inside 2-300 yards they are pretty equal. Outside that the grendel pulls away and shines. If you have a grendel and like it there is no reason to get a 6.8 for hunting.

[Belt Fed]

Thanks, thats what i needed to know.