Federal introduces 7mm Backcountry
- Thread starter mikeyb
- Start date
The 6mm CM is an awesome cartridge, never shot 1 m25 CM so can't speak to that but I do have a 6mm CM so I know what it can do
Good run down on it. Summary unlikely to be reloadable, 12 passes (rcbs suspended attempting). For few shots a year factory ammo shooters oh and it's not accurate from those sources of Ryan's in the video, apparently best look they say is by Alterra. Prolly won't be talked about in 3 years is their take lol. Good vid imo, maybe someone post whatever Alterra has put out on it to add to the full available info's?
Last edited:
25 creed won't do that with a 20" barrel. I don't think you'd reach 3k with a 135 in it with a 26" barrel. Maybe high 2800's, low 2900's. But i'd like to see 3100+ out of a 20" or less. Be the ultimate flat land deer/antelope, hell even moose rifle.
I know i'll catch flack for the moose comment but out here (SK) prairie moose aren't hard to kill. Itll have the same energy, maybe slightly more as a 270 with a 130 and nobody I know has had an issue with killing a moose with a 270.
They must be talking a 25creed using this new Peak Alloy technology to get that kind of speed! lol
It’s already being reloaded.
That’s what I’m hoping for. But it’s wishful thinking. It seems the quarter bores kinda get forgot about. But the numbers are impressive on them. I might just bite the bullet and build a 25 PRC or SAUM instead.
Weatherby....
- Location
- Fraser Valley, B.C.
tactical lever
CGN frequent flyer
- Location
- Fox Creek, Alberta
Just how thick is this case? Typically you should think of brass as more of a gasket, than a separate pressure vessel.
You can shoot warm loads out of a LARGE FRAME Blackhawk .45 Colt due to the extra steel in the cylinder. If you compare the thickness in-between cartridges and compare it to typical .44 RM cylinder beefiness you can extrapolate and see how the numbers correlate. You can't cut down .454 brass to get ".454 Short" type pressures and velocities even though it's supposed to be somewhat thicker brass. You'd scatter pieces of your .45 C over half the countryside. That's why you see the regular sized revolvers chambered in the Casull as a 5 shot versus a 6 shot cylinder handle the pressure.
That an engineer said "it should" handle it, doesn't fill me with a great deal of confidence, and even with purpose built rifles, the journalist was getting heavy bolt lift. That's overpressure already. The (traditionally) long thin cartridge and smaller case head will generate less bolt thrust than a large case head at a similar pressure, but it's still 80 000 psi, and absolutely the action is going to see bolt thrust. The 30-06 size bolt head to the typical magnum is 12% difference, but the pressure is 23% higher. Translates out to 9% more case head thrust on the smaller high pressure load. It's not nothing.
Some confusing and contradictory information from the information I've read. First the steel case is supposed to offer more elasticity than brass, but they don't recommend reloading and resizing seems to take half a dozen cycles. It's also said that the cartridge is supposed to contain the extra pressure, but if it is more elastic, I'm not sure how that is supposed to work. Then I saw that the cases offer greater lubricity than brass (which I find hard to believe), but then these same cases are supposed to grip the chamber walls tighter....
Below lifted from another site, which appears to be information from Federal.
I have one. I love it.
I’d rather short action, plus better quality brass going PRC or SAUM, and cheaper brass when you need more.
Yeah, seemed like a weird claim to me too.
tactical lever
CGN frequent flyer
- Location
- Fox Creek, Alberta
Did a little calculation and if the cartridge is burning 20 less grains of powder to get the same velocity, it should kick with about 6 less ft/lbs of recoil, depending on rifle weight of course.
A little less recoil is nice off the bench, but that'd play a very small part of buying into it, for me. Especially at 7mm levels.
Sounds like a pain to reload for, and probably expensive if a guy is only going to get a couple, few reloads out of the steel.
So I have some misgivings about the whole thing. Can't even hardly get brass for existing cartridges; so I'm not getting wound up over a future orphan.
And I'm guessing the pressure gets quietly dropped to about 70 000 like I believe the Sig Fury is now, so it won't have much of a performance gain over a .280 AI. Or any?
A little less recoil is nice off the bench, but that'd play a very small part of buying into it, for me. Especially at 7mm levels.
Sounds like a pain to reload for, and probably expensive if a guy is only going to get a couple, few reloads out of the steel.
So I have some misgivings about the whole thing. Can't even hardly get brass for existing cartridges; so I'm not getting wound up over a future orphan.
And I'm guessing the pressure gets quietly dropped to about 70 000 like I believe the Sig Fury is now, so it won't have much of a performance gain over a .280 AI. Or any?
Wild_Thing
CGN Ultra frequent flyer
- Location
- In the thick of it!
New hunting trend in U.S. seems to be pushing - short barrels and suppressors.
lolI want to see a 360 degree photo of your head, to assure me that you do have a ####-knot on the back of your skull.
yea no Bun back there ! I just know GREAT cartridges . Some we might agree on and some NOT . 
RJ
Didn’t say what lenght barrel or what pressure so it’s ENTIRELY doable
! RJWho doesn't love carrying a 34" tube afield? lolDidn’t say what lenght barrel or what pressure so it’s ENTIRELY doable
