Quote:
It maybe possible to develop something in 26 or 27 caliber that improves on 5.56 without the negatives of 308. But I have serious doubts. In order to get the muzzle velocity with bullets they want to use you're going to have to very serious negatives. The laws of physics are strictly enforced, there is no way around it
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Much like the 6.5 CM or Lapua that stays supersonic out past 1000 yards. Yep, a real downer.