The army has been debating a heavier round for its battle rifle and squad automatic weapon since the nineties. After extensive testing, it has finally settled on the 6.8x51 round. It already has a civilian name as the .277 Fury. Sig Sauer won the competition for both weapons (XM7 and XM250) and the 101st carried out the first field test last year. The initial production contract is for 111k rifles and 13K machine guns. Fielding is well under way.
The main driver for change is the ubiquitous use of improved body armor. The 5.56 penetrates fairly effectively to 300 meters - the 6.8 will do so up to twice that distance. It will be a big step up over both the current Russian and Chinese rifles.
I think the parallels to the Creedmoor are interesting.
The new round is clearly superior to to the 5.56 - as is a Creedmoor. But the 6.8 is not replacing general purpose MGs like the M240 that use the 7.62 NATO (.308). It remains clearly superior in that role - though perhaps some of the Creedmoor rationalization here should be forwarded to the service.
Probably be a while before the local gun shop has many civilian options so chambered - it is rated for 80K psi.
The U.S. Army’s Joint Program Executive Office for Armaments and Ammunition, along with the Joint Munitions Command, officially...
www.army.mil
Explore the dynamics of .277 Fury vs 5.56 rounds, their history, technical specifications, and potential impact in military and civilian use.
blog.refactortactical.com