Any updates on 6.8 X 51

[leungken]

Hi, new/old member here, first time poster, go ahead, pile on. LoL

I am thinking on adding a new caliber to my rifle collection, and is chewing on the idea of 6.8 X 51 over 6.5 Creedmoor.
Is there any updates wrt the Army fulling adopting the 6.8 cartridge?
Heard lots of rumor about the new cartridge, mostly bad, but then, there is always toothing pain when adopting a new cartridge. There were lots of complain when switching from 30-06 to 7.62 X 51, and then to 5.56 X 45.
Main driver is logistics, will the cartridge be mass produce, by multiple ammo manufacturers, other than Sig Sauer.

I would also love the see, Accuracy International AT-XC be chambered for the 6.8 X 51, if the Army fully adopt the cartridge.
I see advantage with 6.8X51 heavier bullet, higher velocity, and higher energy at 1000 Yards and more, than 6.5 Creedmoor, but then, will the bi-metal case be reloadable?

 

[Thomas Geistman]

To my knowledge the case is reloadable. I just purchased 100 cases and waiting on them to arrive. I’mgoing to re-size 50 of them to 6.5 Creedmoor. The other 50 I’m going to attempt to neck down to 6mm and see what happens. The 6.8 doesn’t have much options for projectiles compared to others.

 

[leungken]

I know, just 2 from Sierra, and the 155 HPBT loaded from Sig

 

[Thomas Geistman]

Yea if you necked it up to 7mm or down to 6.5 you’ll have a lot more options

 

[45-90]

I've been shooting hybrid cases since they first came out in many calibers.
They can be altered to fit any 308 case head cartridge, like 6.5 CM, 7mm-08, 308, 338 Fed, 358 Win, 8.6 Blkout, 6 Dasher, etc.
But I haven't chambered a .277 barrel, because quality reamers were not available...the high pressure of the case has scared most off and some concerns are validated.
Sig had a few civilian rifles chambered for it at first, then stopped.

 

[Thomas Geistman]

I’ve seen someone else on YouTube said to make 6.5CM they just trimmed it down to length and then ran it through a die.

I think I’m going to try cleaning and then annealing. Then trim to length of CM case and lube the he’ll out of it and run it through a 6.5 die. Think that would work?

 

[Wannashootit]

I am thinking on adding a new caliber to my rifle collection, and is chewing on the idea of 6.8 X 51

And screw the barrel onto "what"?

No thanks.
Not sticking my eyeballs behind a receiver designed for max 65 kpsi with an 80 kpsi cartridge in the chamber.

https://saami.org/wp-content/uploads/2020/11/277-Sig-Public-Introduction-Orig-2020-11-11.pdf

Call me crazy... yep, those engineers are just too damned conservative- it'll be fine...

 

[Thomas Geistman]

I’m not necessarily saying you have to run the pressure all the way to 80k but maybe give it a bit more and they suppose to give a little more case capacity. I think we’re gonna start seeing more HP cartridges in general over the years. About to release the 7mm back country. I’m sure the other manufacturers are gonna come out with some too.

 

[memilanuk]

I've been shooting hybrid cases since they first came out in many calibers.
They can be altered to fit any 308 case head cartridge, like 6.5 CM, 7mm-08, 308, 338 Fed, 358 Win, 8.6 Blkout, 6 Dasher, etc.

I'll probably regret it, but I'm curious: where can one find more information on these 'hybrid' cases?

 

[Wannashootit]

.277 SIG Fury Cartridge: Everything You Need to Know - Guns and Ammo

SAAMI approved a maximum chamber pressure of 80,000psi for the new .277 SIG Fury. First unveiled in late 2019, the cartridge is the result of SIG Sauer's participation in the Next Generation Squad Weapons (NGSW) military procurement solicitations.

www.gunsandammo.com

 

[Kickin45]

New Seekins Havak’s are available in 277 Sig.

 

[leungken]

I am more thinking both a Spear and Cross, and maybe in the future, if AI might chamber it for the AT-Xc