dangertree
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Federal introduces 7mm Backcountry
- Thread starter mikeyb
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dangertree
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AFAIK the suppressor angle is more of a bonus. The initial technology is related to military desire for high pressure cartridge. In the end we have a cartridge which achieves belted magnum velocities plus in a standard long action rifle. That this cartridge can achieve 3000 ft./s+ in a 20 inch barrel is handy with a suppressor versus a 24 inch with a suppressor. I believe higher terminal energy at long ranges in a smaller package is the driving force.
dangertree
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This is not my communication with Bill Geissele, but it checks out.
dangertree
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I'm not disagreeing with American Hunter magazine, I'm just talking in general about the DOD request for high pressure cartridge technology. More terminal energy in a smaller, easier to carry, and shoot, rifle.
Yeah, but its not *this* cartridge that was put forth to DND was it? Thats just where the case technology comes from? Or did they even propose a new cartridge? Or was it just the case technology all along? The only new cartridge I've heard of coming out of DND in recent years is the one Sig did (277 Fury), but that isn't an area I typically focus on so I certainly could have missed it.
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dangertree
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Not this cartridge (AFAIK anyway). But the high pressure steel case development. I do know that FN had Federal provide steel case ammo for some of their prototypes.
We don't really have any idea what the DoD looked at , tested or made a proposal for. Lots of commercial stuff started as a military idea but ended up going to the civilian market first. The .308 Winchester is an example.
As I remember, there were 3 guns and cartridges that made the US NGSW trials, I believe two had steel cases, on was the True Velocity case, they were all 6.8mm (.277)cal, as that was what the military settled on. I forget who made what for what gun now. Assuming Fed supplied ammo for one of the three guns in the trial, maybe one that didn't cut the mustard, decided to try it commercially and made it 7mm to get bullet selection (Fed rep also said that's why a 7mm). Now, if this works, they'll bring out some more cartridges at 80k. They say gun mfgrs like the idea, as it doesn't involve a lot of work for them to offer it. Trend seems to be short bbls for suppressors now, in the US and EU, so, it has potential.
Has this being asked ? 
RJ
So why not just use peak alloy on traditional cartridges to amplify their performance, 243, 270, 280 AI - 308 - 3006 - 7 RM - 300 WM. Etc Etc instead of making a whole new caliber cartridge???
Oh too Easy and Federal won’t be FAMOUS
RJ So why not just use peak alloy on traditional cartridges to amplify their performance, 243, 270, 280 AI - 308 - 3006 - 7 RM - 300 WM. Etc Etc instead of making a whole new caliber cartridge???
Oh too Easy and Federal won’t be FAMOUS
It has been asked and answered. Right on this thread actuallyHas this being asked ?
So why not just use peak alloy on traditional cartridges to amplify their performance, 243, 270, 280 AI - 308 - 3006 - 7 RM - 300 WM. Etc Etc instead of making a whole new caliber cartridge???
Oh too Easy and Federal won’t be FAMOUS
- Location
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Has this being asked ?
So why not just use peak alloy on traditional cartridges to amplify their performance, 243, 270, 280 AI - 308 - 3006 - 7 RM - 300 WM. Etc Etc instead of making a whole new caliber cartridge???
Oh too Easy and Federal won’t be FAMOUS
I bet you they will in some aspect if this takes off running. I’m thinking everything you mentioned plus modernizing case designs slightly to make them a hair more efficient for the heavy for caliber projectiles that are all the craze these days.
B
The thing that stands out to me is this cartridge is based on a 30-06 length, whereas the military doesn't really use anything that size, its all 556, 762, and 50bmg (with some niche exceptions of course). That is what makes me think this is not the actual cartridge that the Military tested.
Weatherby Fan
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- Maple Ridge,BC,Canada
Well you’re not wrong Jim, but I’m thinking a few reasons, if it takes off and is hugely successful…..it’s their cartridge, ammo, bullets, SALES !!!! and yes famous and the glory.Has this being asked ?
So why not just use peak alloy on traditional cartridges to amplify their performance, 243, 270, 280 AI - 308 - 3006 - 7 RM - 300 WM. Etc Etc instead of making a whole new caliber cartridge???
Oh too Easy and Federal won’t be FAMOUS
Say they used a 30-06 case for their new 80,000 PSI cartridge it could be used in any 100 year old action which might not be good with some of the old cast actions, not that they can’t be rebarreled but….
I think you will see a whole line of cartridges if the Backcountry takes off, but none of them will be based on any current cartridges, they will be different and made by Federal in every application,
You will probably see a smaller version of the Backcountry next in 7mm, sort of like a 7mm-08 Ackley Improved but with the 30 deg shoulder angle, a 7mm-08 that performs like a 7mm PRC or Rem Mag, Mitch would love that !!!
Will be interesting to see where they go from here. One article I read specifically calls out the long/skinny aspect of the cartridge as being necessary for safety to ensure there is enough friction between case and chamber to keep bolt thrust down:
Although they DO say that the case takes all the extra pressure, and thus the same rifles we have today are capable of the extra pressure:
So I really don't know what to expect. Makes you wonder what is gonna happen if a case lets go in a "regular rifle" though.
(source for quotes: https://www.outdoorlife.com/guns/federal-7mm-backcountry-review/)
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I think very much the same. If the case fails how will the other components hold up. If I were to build one it would be with all new components just to be safe.
B
I'd give my left nut to see a fast twist, short barreled, 25 cal speed demon.
Maybe a 25-08 (some know it as the Souper) but with 30-35 deg shoulder, that hums 135gr Bergers at 3200ish fps in an 20" barrel.......a guy can dream I guess lol
Thanks CHUCK ! you got a rifle on order Yet ?
RJ
25 Creedmoor at 3000 or so and a couple more CLICKs up on the Turret and your Golden ! RJ
