Fired an XM8 in 6.5 Grendel at SHOT. Incredible! 6.5 Grendel is a small round that fits the 5.56 form factor and has better downrange accuracy and ENERGY than 7.62 NATO!
No, that's the beauty of it. It's such a wind cheater that at 600 meters, it is better, stronger and flatter than 7.62NATO/308WIN!
Check up on it, it's most excellent. Surprisingly, this is very much like the round they originally wanted for M1 Garand, but we had too much 30.06 in stock, so they had a situation then like we have now with 5.56!