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7mm Federal Backcountry
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Picture of D Humbarger
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is it reloadable since it uses that steel case? What about just using 280 Ackley dies ? Questions questions



Doug Humbarger
NRA Life member
Tonkin Gulf Yacht Club 72'73.
Yankee Station

Try to look unimportant. Your enemy might be low on ammo.
 
Posts: 8354 | Location: Jennings Louisiana, Arkansas by way of Alabama by way of South Carloina by way of County Antrim Irland by way of Lanarkshire Scotland. | Registered: 02 November 2001Reply With Quote
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Federal says it's reloable about two times. There's a huger article about in the most recent Guns & Ammo. One thing I don't like about it is that they said in the article that it will set the bolt lugs back .0001 to .0002 inch and then it stops. I don't like that at all. It's runs at 80K pressure. The case is a special stainless alloy used in nuclear reactors. I don't know about using 280 dies to reload it. Myself I don't need anything running that pressure range, but the case would last forever loading it in a 280 which is very close dimensions.
 
Posts: 23 | Registered: 18 February 2005Reply With Quote
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Humbarger this is for you. It's the SAAMI specifications for the 7mm Backcountry. Compare it with the 280 dimensions to see if you can use 280 dies to reload. I haven't checked.

https://saami.org/wp-content/u...untry-2025-01-27.pdf
 
Posts: 23 | Registered: 18 February 2005Reply With Quote
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Picture of D Humbarger
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I guess that We'll find out the details when the dust settles. I'm curious mainly because I shot and reloaded the 280 Ackley for years. Now I use the 284 Winchester instead.
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Doug Humbarger
NRA Life member
Tonkin Gulf Yacht Club 72'73.
Yankee Station

Try to look unimportant. Your enemy might be low on ammo.
 
Posts: 8354 | Location: Jennings Louisiana, Arkansas by way of Alabama by way of South Carloina by way of County Antrim Irland by way of Lanarkshire Scotland. | Registered: 02 November 2001Reply With Quote
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280 ackley improved datum
2.10 min

7mm reckless, err, BC datum

2.070 min

40 thou is a pretty big gap

case length
280
2.56 min

7mm reckless
2.417

shoulder dia
280
~.442

7mm reckless
.4580


short answer - no, can't reuse dies--- which makes DAMN good sense, as if you could reuse the dies, then they would interchange in the rifle --

I don't think you could force either into the other without a hydraulic press


opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
the416AR, 458AR, 470AR, 500AR
What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
http://www.weaponsmith.com
 
Posts: 40999 | Location: Conroe, TX | Registered: 01 June 2002Reply With Quote
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quote:
Originally posted by jeffeosso:
280 ackley improved datum
2.10 min

7mm reckless, err, BC datum

2.070 min

40 thou is a pretty big gap

case length
280
2.56 min

7mm reckless
2.417

shoulder dia
280
~.442

7mm reckless
.4580


short answer - no, can't reuse dies--- which makes DAMN good sense, as if you could reuse the dies, then they would interchange in the rifle --

I don't think you could force either into the other without a hydraulic press



With the pressure the new Federal round operates at you definitely want a case that fits the chamber correctly.

My take is we don't need this cartridge. Loaded it's going to cost an arm and leg. Too much pressure hard on the gun. What about barrel wear and throat erosion? I'll pass.
 
Posts: 23 | Registered: 18 February 2005Reply With Quote
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Take a look at the SAAMI spec. They've issued a warning about firing ammo above 65k psi to cover their butts. That's a big vote of confidence, eh?

I saw a Federal YT video yesterday where the BC R&D guy handloaded a single case - once - from a fired Federal Premium factory round. Those are the cases Federal says are reloadable. The cheaper rounds are not reloadable. Notably, he did not use a canister powder, but their propriety powder to reach the spec' 3000 fps MV from the 20" barrel.

I couldn't tell from the YT video whether he NK, or FL sized the case. The case went in and out of the die pretty dang easy, so I'm thinking he NK sized it only.
 
Posts: 116 | Location: Wet Side, WA | Registered: 09 January 2004Reply With Quote
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Federal's Peak Alloy Steel case is proprietary. I can answer one of your reloading it questions. It's reloadable, to a degree, because the case HAS A SPECIAL COATING OUTSIDE AND INSIDE. Now I don't know what the coating inside does, but the outer coating let's it be resized. Federal's Fusion line are steel cases that don't have the special Peak Ally coating and cannot be reloaded. My guess the reloading you saw of the 7mm BC was FL sized.
 
Posts: 23 | Registered: 18 February 2005Reply With Quote
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steel like that doesn't just full length resize in one single pass.
RCBS was messin with the case some and had to run it in the die like 9 times before the case finally took a set at the new dimensions.

I'm sure this round is exactly what someone wants. [to drop like 6-K on]
but it surely ain't gonna be this dude.
 
Posts: 5037 | Location: soda springs,id | Registered: 02 April 2008Reply With Quote
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I am reading that it is causing bolt setback w very few rounds.

Shooter: I am sorry to post over you. I just read your post.
 
Posts: 13386 | Location: Somewhere above Tennessee and below Kentucky  | Registered: 31 July 2016Reply With Quote
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Picture of eagle27
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My 7mmWSM with 22" barrel produces a chronographed 3000fps with 160gr bullets at 65,000psi in a short action.
Of what value is another 10grs bullet weight at the same velocity in a '06 length action with special cases at 80,000psi, not withstanding a 2" shorter barrel? What a con job.

Federal would be much better occupied by concentrating on making more of their great TBT bullets for existing cartridges.
 
Posts: 3980 | Location: Rolleston, Christchurch, New Zealand | Registered: 03 August 2009Reply With Quote
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Picture of MyNameIsEarl
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Im guessing barrels won't last long either
 
Posts: 773 | Location: Camp Verde, AZ | Registered: 05 February 2006Reply With Quote
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Better, cheaper is the way to sell a new product.

I don't think this one is going to last.
 
Posts: 20001 | Location: wis | Registered: 21 April 2001Reply With Quote
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quote:
Originally posted by p dog shooter:
Better, cheaper is the way to sell a new product.

I don't think this one is going to last.

Au contrair: Most of the newer paramilitary/Flash Gordon/Star Wars crap on the market is neither better nor cheaper. But it sells because of the P.T. Barnum factor. Shiny objects like this are made to sell, not to function. Although some will sell, I agree that it won't last. Ammunition will be just as available as the 5mm Remington Rimfire or the Etronix (electrically fired ammunition) within a couple of years. Will probably be just as successful as Trounds handguns or the GyroJet.
 
Posts: 13334 | Location: Henly, TX, USA | Registered: 04 April 2001Reply With Quote
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