![]() There are other challenges related to the Fury. At the time of this writing, the only rifle designed for this pressure level is SIG Sauer’s Cross new MCX-SPEAR. 277 SIG Fury in a rifle that wasn’t expressly designed for high-pressure ammunition. No matter how often anyone states their action is “strong enough”, never shoot the. Either way, that’ll be one sad and injured - maybe even dead - shooter. Maybe the bolt blows out the back of the receiver into the shooter’s face, or perhaps the front of the receiver splays open like a banana. Then, all kinds of hell will break loose. Those bolt lugs could go from “fine” to “gone” with one trigger pull. The problem is that there is no guarantee the bolt lugs will slowly “set-back” and give him a warning that they’re about to shear off. Thinking he’ll gauge the rifle every hundred rounds or so, he thinks he’ll stop shooting when the bolt closes on the “No-Go” gauge. 277 SIG Fury hunting rifle, one that was never designed for the high pressure. I see the potential tragedy unfolding: A guy gets a set of “Go” and “No-Go” gauges for his freshly chambered. The problem is, while the loaded ammunition is perfectly capable of functioning in that chamber, there’s a very good chance that the rifle will go kaboom if fed a diet of the high-pressure round. 308 Winchester into one that fires new hotness. 277 SIG Fury since that’s all it will take to turn any old. I think it is likely some motivated rifleman will grab the old deer rifle from behind the bedroom door and have it re-barreled for the. This means it will load and feed from any 7.62x51mm NATO (.308 Winchester) detachable-box magazine. 470-inch, and a maximum overall length of 2.83 inches. 277 SIG Fury has a case-head diameter of. 277 SIG Fury loose on a consumer market that was unfamiliar with its capabilities and limitations. The biggest concern was turning something like the. It was uncharted territory for a factory-produced cartridge. 277 SIG Fury came up for committee discussion, some members protested at the idea of any cartridge loaded to 80,000 psi. ![]() The SAAMI committee is comprised of representatives from throughout the firearms industry, so it is their job to self-police the firearm industry and exercise good judgment on behalf of both consumers and manufacturers. The SAAMI committee had three separate meetings canceled due to travel restrictions they couldn’t meet to decide whether to approve the cartridge until 2021. The most significant reason for its delay was COVID-19 related. SIG Sauer unveiled the cartridge in late 2019, but it didn’t receive SAAMI approval until November 2020. Such a bold move in ammunition development isn’t going to be met with easy acceptance. ![]() This is a historic moment in ammunition because, until now, the maximum allowable SAAMI-approved pressure was 66,000 psi! (Photo courtesy of SIG Sauer) SIG Sauer is the only manufacturer that has pursued and received SAAMI approval for their Next Generation cartridge, and it named the new commercial cartridge the “.277 SIG Fury.” While the commercial variant of SIG Sauer’s cartridge isn’t quite as high-pressure as the military ammunition, it was SAAMI-approved with a maximum-allowable chamber pressure of 80,000 psi. The most succinct explanation comes from the Chairman of the Joint Chief of Staff General Mark Milley: “This is a weapon that could defeat any body armor, any planned body armor that we know of in the future.” However, those details were not made available for public consumption. The Army has never come out and said why it had to be 6.8mm instead of a more commercially popular caliber like the 6.5mm, but there was a classified brief given at the National Defense Industrial Association (NDIA) that offered some explanation. Oh, yes, they also had to design a rifle (NGSW-R) and automatic rifle (NGSW-AR) to fire it. The Army intends to make its bullet for this program at Lake City Arsenal, and it placed the burden of cartridge development to figure out how to achieve such a high velocity on the firearms industry. We know that this projectile travels more than 3,100 feet per second (fps), but the actual velocity produced by the 6.8x51mm round is currently held secret. The NGSW solicitation specified that the cartridge had to fire its Picatinny Arsenal-designed 135- to 140-grain. The military indicated they wanted a new cartridge for the NGSW program, and it knew the performance that it wanted. Army has been making noise about “Next Generation” weapons and ammunition for years, and it gave firearms manufacturers its design criteria in 2018. ![]()
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