At 25:30 the 6.8SPC is suggested using a higher operational pressure along with a better bullet.
Funny thats exactly what the guys on the MAC channel said when they were discussing itSig's web site has the Elite 150gr Bonded pegged at 2830 FPS for a 16" barrel which is blazing fast for that barrel length and weight. 2667 ft-lbs muzzle, similar to 270 Win performance from a 24" barrel, but the 270 Fury is doing that from a 16" barrel. @ 700 yards it is still cooking along at just a tick under 1700 FPS @ 958 ft-lbs. BC is listed at .500. Chamber pressure is around 80k PSI, hence the hybrid cartridge design, massive bolt lugs and new platform.
For a 13" barreled MCX Spear with integrated suppressor, no sights, lights, optics, it clocks in at 8.4 lbs, pretty heavy compared to a 6.8 SPC chambered M4.
6.8 SPC would have enhanced a fire teams capabilities at the same ranges as 5.56 NATO is used, but it clearly doesn't provide the long range capability for the mountains of Afghanistan nor does it provide armor penetration beyond 100 yards, so I get why a full powered cartridge was developed capitalizing on 6.8mm bullet's balance between terminal performance and exterior ballistics.
While this will never happen, the most ideal solution in my opinion would have been to adopt 6.8 SPC to replace all 5.56 NATO chambered M4A1's for applications intended for 5.56 NATO and then develop / adopt the new 6.8x51mm full powered cartridge / NGSW platform for DMR and Squad Automatic roles which augment a fire team's capability.
A fire team could theoretically be comprised of three 6.8 SPC M4's with one XM5 (rifle variant) or one XM 250 (machine gun variant). Alternatively, you could equip two team members with 6.8 SPC M4's, one with an XM5 and one the XM 250.
It's just a shame 6.8 SPC was passed over in favor of the M855A1 load in 5.56 NATO because it still does everything 5.56 NATO does, but much better. And they could have used the same projectile design of M855A1 or the now defunct MK318 scaled up for 6.8 SPC just like they did with M80A1.
Hmm, I'm not sure if the Army really expects or needs the round to penetrate or just deliver enough energy to sufficiently deform and still incapacitate.I really don't think 277 Fury is going to produce significantly better terminal performance after penetrating armor...
Armor penetration capabilities were one of the primary requirements behind the velocity, diameter and mass specifications. They desire to be able to defeat all modern body armor and all body armor expected to be developed over even the next decade by peer adversaries, something 5.56 cannot or will not ever do and neither can 6.8 SPC or other medium calibers except at closer ranges, out to about 100 yards or less, they can defeat existing Level IV.Hmm, I'm not sure if the Army really expects or needs the round to penetrate or just deliver enough energy to sufficiently deform and still incapacitate.
Not sure if you're making the point, but the NGSW puts a laser range finder right on top of the optic which also calculates and presents the E/W solution within the optic.The real trick is range estimation. Wind is important but workable with hold offs. I'll be shooting an AR-10 in our 600yd long range match tomorrow as an AR-T. Cleaning the 600 yard target is pretty easy. Getting hits on even a head sized target at 600-800 yards with a cartridge with the ballistics of the 6.8x51 would be fairly easy IF you knew the precise distance. That will be the key to using the optics. Getting a precise distance and holdover.
Yeah I just came from another forum where dudes are drooling over the Grendel telling me it can defeat lvl IV plates. I've never seen evidence of this. Anybody have videos?There was a grendel fan boy in the comments claiming it could penetrate level 4 body armor at 300 yards lol
Unless they have some AP bullets pulled from some country that once used a 6.5 in the military I doubt it. First off the G doesn't push any bullets fast enough to do it.Yeah I just came from another forum where dudes are drooling over the Grendel telling me it can defeat lvl IV plates. I've never seen evidence of this. Anybody have videos?
Sent from my Pixel 3 using Tapatalk