11-02-2018, 12:01 AM
grayfox Wrote:Fox news has an article that the Army is going to develop a 6.8mm projectile, not a lot of specifics but the author seemed pretty sure it was the next NGSW and NGSAW..... if it were a monolithic FMJ it might have the profile with a better BC and yet be only 115-130 gr, of course the same could be done with a 6.5 in a mono-fmj style. A 6.8 in ~120 grs mono-fmj could possibly have a BC of 0.460 or so, not match quality but better than most 6.8's under 130 gr. With a case design that's not limited to the std brass, maybe it might be possible to get enough powder to drive it for the 500-600 yds they might be looking for... I'm guessing on the range distance, another thing I don't know is how much KE a proj needs to have for what the service would call acceptable for field terminal ballistics... is it 800 ftlbs, 700, 600 or what...
I'm not advocating for the 6.8 dia, just bringing it up...
Anyway, interesting article.
https://www.foxnews.com/tech/new-army-bu...er-hitting
There's a thread on that, which is a different program entirely.
On the SOCOM side, they set realistic goals for something that should have happened in the 1950s.
On the big fat mean pickle machine Army side, there is this fantasy about a 16" barreled carbine launching a 125gr solid 400fps faster than a 24" barreled .270 Winchester can with 63gr of powder and 65,000psi chamber pressure.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com