I Picked Up These 277 Sig Fury Cases At The Range

[Catfur]

The same performance can be had with a 270wsm at normal pressures.

Sure, but the military doesn't want to deal with a pile of heavy 270WSM cases, or magazines that only hold 10 WSM rounds, or big ass semi-auto rifles (with long-ass barrels) capable of firing WSM rounds. The whole thing springs from the military's wants and needs, not necessarily the civilian shooting community's.

SIG, of course, wants to sell its product to as large an audience as possible.

 

[Straightshooter1]

From the military POV, there seems to be mixed reviews regarding the weapon systems for the 277 cartridge. Like exterior ballistics and penetration at distance vs added weight, fewer rounds to carry and complexity of the system. I think it may turn out that it'll work out to be useful in a more narrow application that originally thought.

Here's some pics of a couple of the weapon systems being tested (note the Vortex's fire control optic):

 

[DaveTooley]

From the military POV, there seems to be mixed reviews regarding the weapon systems for the 277 cartridge. Like exterior ballistics and penetration at distance vs added weight, fewer rounds to carry and complexity of the system. I think it may turn out that it'll work out to be useful in a more narrow application that originally thought.

Here's some pics of a couple of the weapon systems being tested (note the Vortex's fire control optic):
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The ammo is about 20% lighter. They can carry more. The requirements were to defeat level 4 armor at 600 yds. Which it does. As with any increase in performance, whether be gasoline powered or nitrocellulose powered, many things, good and, rise to the surface. Also the rifle being fieled right now.

 

[LVLAaron]

Yes. He passed in Sept of 2023.

Did he have a youtube channel where he rambled about all sorts of things?

 

[Steve Donlon]

Sounds like extremely short barrel life at 80,00 PSI. Looks to me like a multi billion dollar project if you rearm all our military. We are stupid enough to pay the bill. What if NATO countries don't want it or cannot afford it.. Then you cannot share ammo between countries during combat. I read somewhere that they estimated that 1.500,000 rounds of 5.56 ammo was fired for each VC killed. 5.56 won't penetrate modern flak jackets. Some kind of hardened steel penetrator should penetrate modern vests.

exactly, nato and us already have then .308 SCAR What's the point of the 277 Fury? just politics and money.

 

[Catfur]

exactly, nato and us already have then .308 SCAR What's the point of the 277 Fury? just politics and money.

The point of the 277 fury is that the military designed first (without regard to CARTRIDGE) an armor penetrating bullet that was a .277 diameter bullet. This bullet, fired at a certain velocity, met all the design specs that the military had for the bullet in regard to ballistics and armor penetration.

THEN they turned to industry and said: "Bid for contract a cartridge and rifle combination that fires this bullet at <speed X>." SIG's entry was the .277 fury and whatever that rifle they bid was. And it won the competition (how good it is overall isn't something I'm prepared to remark on).

 

[Steve Donlon]

The point of the 277 fury is that the military designed first (without regard to CARTRIDGE) an armor penetrating bullet that was a .277 diameter bullet. This bullet, fired at a certain velocity, met all the design specs that the military had for the bullet in regard to ballistics and armor penetration.

THEN they turned to industry and said: "Bid for contract a cartridge and rifle combination that fires this bullet at <speed X>." SIG's entry was the .277 fury and whatever that rifle they bid was. And it won the competition (how good it is overall isn't something I'm prepared to remark on).

politics and money, you understand how bids work for the government. The bid is already so inflated. I have bid on government jobs and was shocked at the guidelines. And got the jobs because I bid them so high.

 

[ebb]

They may be able to take that kind of PSI, but were never designed for it. They build them over strength to allow for all kinds of issues to give them a chance of surviving when someone overloads them, or any number of issues that may make more pressure than they were designed for.