How bad is the 7 backcountry?

[liber]

You can order a 277 fury pre-fit and have it in a month or 2.

I see there are reamers and I know it's SAAMI, and dies are available now also...but cases are around, but look like once fired, some saying they don't have the steel head, but have a brass one. Sounds like it's ahead of the 7 BC as it's SAAMI.

Would seem that if the peak alloy is better, maybe sig would license it for their cases? Certainly seem to be a better option than the 7BC, as I recall the Fury is based on the 308 as I recall, so that might be a good thing. I need to finish my 6.5 PRC first. After I have a man bun I can look at Fury! LOL

 

[akmtnhnt]

Yeah, that's a possibility. Numbers for LR-308 dwarf the bolt actions though. I have though if you had a barrel for 277 and a barrel for 8.6 blackout, that's pretty much all one would need. I don't have an 8.6 blackout in a bolt yet.

But what has the Fury done? Has anyone got near 80,000 psi ???

I'm sure plenty of people have gone well past 80k since you can't really read any pressure on it.
Plenty of people are reloading it with the steel case head. It's available as surplus with the primers in them and bullets pulled. About the cheapest brass out there.

I see there are reamers and I know it's SAAMI, and dies are available now also...but cases are around, but look like once fired, some saying they don't have the steel head, but have a brass one. Sounds like it's ahead of the 7 BC as it's SAAMI.

Would seem that if the peak alloy is better, maybe sig would license it for their cases? Certainly seem to be a better option than the 7BC, as I recall the Fury is based on the 308 as I recall, so that might be a good thing. I need to finish my 6.5 PRC first. After I have a man bun I can look at Fury! LOL

The fury is a 270-08ai with a steel case head. The military picked it and federal didn't even make it to consideration with their case. So it must suit their needs better. It is certainly better for the hand loader. It's already been wildcatted into just about every iteration you can possibly turn a 308 case into. Barrels, dies, brass have been available for maybe 2 years now.

 

[liber]

I'm sure plenty of people have gone well past 80k since you can't really read any pressure on it.
Plenty of people are reloading it with the steel case head. It's available as surplus with the primers in them and bullets pulled. About the cheapest brass out there.

I wasn't sure if they're deploying it, or if they're testing. Maybe they're testing it in the field. I've never been in the military, although I have known a lot of them. I don't know if I would be good in the military, I'm just not good at being told what to do. Not to dis them, but it's a way of life.

The fury is a 270-08ai with a steel case head. The military picked it and federal didn't even make it to consideration with their case. So it must suit their needs better. It is certainly better for the hand loader. It's already been wildcatted into just about every iteration you can possibly turn a 308 case into. Barrels, dies, brass have been available for maybe 2 years now.

Are people getting 80,000 psi? I had heard people were getting more like 70,000 psi which would be much less impressive since many magnums get 65,000 psi today.

 

[Tom264]

At least for bolt rifles, you can run the 277 sig fury through a 308 win die and go shoot it in your 308win rifle now.

Very interesting…..

 

[Mike D Texas]

With your 260ai, do you still have to bump the shoulder back? Basically... does the fury have a shoulder forward or back or a typical AI cartridge?

It depends. The .308 I definitely have to push the shoulder back. I do that with a Redding body die. The 260AI is a simple neck down to the appropriate diameter and Fireform.

The 22-250AI is obviously the most work having to reduce neck size in multiple steps and bump the shoulder back quite a bit. It really isn't worth it since I can get desired velocities out of 22CM Alpha SRP brass.

 

[Mike D Texas]

Yeah, that's a possibility. Numbers for LR-308 dwarf the bolt actions though. I have though if you had a barrel for 277 and a barrel for 8.6 blackout, that's pretty much all one would need. I don't have an 8.6 blackout in a bolt yet.

But what has the Fury done? Has anyone got near 80,000 psi ???

I can't definitively say yes because I don't have a test barrel or pressure trace equipment, but I have pushed a 260AI to 3236fps with a 140 grain bullet in a 24" barrel (pierced primer but pocket was still tight) and I've pushed a 20" .308 to 3077fps with a 155 TMK with no failures.

I'd say the pressure is getting up there.

 

[Highvoltage]

I personally think this is the technology of the future. I think everyone will jump on this. The extra performance is impressive and will be once they start with smaller stuff…223, creed, 308 etc. think about a 6 creed at 80 psi, it's been wildcatted but a 6 prc comes to mind without the extra powder. 41/42 grains shooting a 108 at 3k+. That extra velocity at a match or shooting yotes in the wind. It's coming, whether folks want it or not. Just let it run it course and maybe we can all benefit in the end. Best wishes

 

[LTH181818]

I personally think this is the technology of the future. I think everyone will jump on this. The extra performance is impressive and will be once they start with smaller stuff…223, creed, 308 etc. think about a 6 creed at 80 psi, it's been wildcatted but a 6 prc comes to mind without the extra powder. 41/42 grains shooting a 108 at 3k+. That extra velocity at a match or shooting yotes in the wind. It's coming, whether folks want it or not. Just let it run it course and maybe we can all benefit in the end. Best wishes

Agree, if brass would handle 80k, I would now use the smallest case that would give me 3k Velocity. How fast would a 6mm Dasher 109 bullet be at 80K PSI.