New True Velocity Manufacturing Article
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My understanding is that the goal was a particular amount of energy delivered at a particular long range, using EPR (Enhanced Performance Round) bullets. These bullets are made with steel and copper, similar to M855A1, but with higher BC. The lower density of the EPR design vs a lead core bullet drove the need for a diameter larger bullet to meet whatever goal they had set. I know that Textron was working on a 6.5mm cased-telescoped cartridge that utilized a lead-cored bullet prior to the NGSW project.
Of course, the actual relevance of the Army's chosen goal is up for debate.
The switch to lead-free bullets has affected other projects. I had contact with the fellow developing the .277 Sidewinder round for potential military approval a few years ago. It was actually a cartridge based on the 30 Remington that his father had started on several decades ago. He had based the round on achieving a certain amount of retained energy at something like 800 or 1000m. When the Army switched away from lead-cored bullets, the BC's on bullets that fit his cartridge dropped to where he could no longer reach his goal.
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I guess this is backing the train way, way up, but..
From the video "We're currently sending our soldiers and marines onto the battlefield....at an adversary that's got superior ammunition with greater effective range who's now wearing level III body armor."
Who are they talking about?Paul Peloquin
Did government credibility die of Covid or with Covid?
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Originally posted by biodsl View PostI guess this is backing the train way, way up, but..
From the video "We're currently sending our soldiers and marines onto the battlefield....at an adversary that's got superior ammunition with greater effective range who's now wearing level III body armor."
Who are they talking about?
I'm guessing they are talking about US tax payers?
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My understanding is that the Army conducted tests a few years ago and determined that 6.8mm was the smallest caliber that would defeat modern hard body armor at long range. It seems very unlikely that 6 ARC or 6.5 Grendel would be capable of achieving the desired performance.
Originally posted by A5BLASTER View PostAgreed.
6.8/277 cal is so 1960's tech.
Originally posted by biodsl View PostI guess this is backing the train way, way up, but..
From the video "We're currently sending our soldiers and marines onto the battlefield....at an adversary that's got superior ammunition with greater effective range who's now wearing level III body armor."
Who are they talking about?
I imagine the "greater effective range" comment refers mainly to 5.56x45 weapons versus 7.62x54R weapons like those below, a comparison that's been done by others.
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Level III body armor is appearing all over the world. It is pretty inexpensive these days. Its been seen in Afghanistan, Sudan, etc. That is what has driven the energy-at-range component of the NGSW program. Again, it is open to debate on whether the particular goals they have chosen are the best ones.
7.62x54mmR weapons like the SVD and PK machineguns technically outrange their 7.62x51 rivals. The US has also been shortening the barrels on various weapons, which makes that difference greater. This NDIA presentation goes into detail on the "range gap" of various weapon systems and proposes solutions (largely 6.5mm, BTW) https://ndiastorage.blob.core.usgovc...260_Schatz.pdf
Here is another article that makes the argument that longer-ranged weapons, in this case using a GPC (General Purpose Cartridge) for use in both rifles and machineguns should be adopted. https://quarryhs.co.uk/TNG2.pdfLast edited by Fess; 06-06-2021, 06:18 PM.
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