Originally Posted by
BoringGuy45
I think, logistically, the .277 WLV appears to be the most economic choice if, hypothetically, the military were to charge forward with replacing the 5.56 with a bigger round. Only a barrel change for very little gain in weight and a round that can do almost everything the 6.8 SPC can.
One thing I wonder though, why 6.8 instead of 6.5? So far, the only 6.5 round in the 5.56 case I've seen is the 6.5 PCC, and that has too short a neck and shoulder. I figure if you neck the .277 WLV down to 6.5, you'd get a round with better external ballistics and very similar terminal ballistics in the same weight bullets.