Time for another 7 Backcountry Thread

[PistolPete]

I'm not blown away by the caliber, but the concept might be interesting - if those steel cases could be manufactured for existing guns/calibers, and then allow 80k psi. A reach, but they mention that backthrust with steel is less than brass cases at normal pressures. I don't know if backthrust is the limiting factor for rifle pressures, maybe yall can fill me in.

That COULD mean Creedmoor performance in a Grendel, with ~20% less recoil (since powder weight is part of the recoil calculation, comparing a Grendel with 30gr/80k vs Creed at 45gr/60k in GRT and online recoil calcs)?

I can't imagine it would be that easy. Right?

7mm Backcountry - Federal's New Wonder-Cartridge?

Federal's newest cartridge has just been announced, the 7mm Backcountry. Check out our MUST READ FIRST article on this new cartridge.

gununiversity.com

 

[Megalodon]

If you look around enough you'll find a few people that picked up the 277 Fury hybrid cases and run them at higher pressures. Those are .473 BF and the brass can be cut/mandreled like normal.

 

[deerhunter628]

It looks interesting especially if it can be reloaded. Im not optimistic that it will take off because im not sure other brass makers will want to retool to make the cases.

 

[HandgunHTR]

I'm not blown away by the caliber, but the concept might be interesting - if those steel cases could be manufactured for existing guns/calibers, and then allow 80k psi. A reach, but they mention that backthrust with steel is less than brass cases at normal pressures. I don't know if backthrust is the limiting factor for rifle pressures, maybe yall can fill me in.

That COULD mean Creedmoor performance in a Grendel, with ~20% less recoil (since powder weight is part of the recoil calculation, comparing a Grendel with 30gr/80k vs Creed at 45gr/60k in GRT and online recoil calcs)?

I can't imagine it would be that easy. Right?

7mm Backcountry - Federal's New Wonder-Cartridge?

Federal's newest cartridge has just been announced, the 7mm Backcountry. Check out our MUST READ FIRST article on this new cartridge.

gununiversity.com

I can get 80K in a regular brass-cased cartridge, but it will most likely loosen the primer pocket to the point that it makes the case unusable again. So, since this is steel cased and most likely non-reloadable, what are you actually gaining?
Leave it to an ammunition manufacturer to come up with a "new" concept that basically makes you dependent on them to provide you ammo. Reminds me of the Remington E-tronics.

Hard pass from me.

 

[Mikey_B79]

I can get 80K in a regular brass-cased cartridge, but it will most likely loosen the primer pocket to the point that it makes the case unusable again. So, since this is steel cased and most likely non-reloadable, what are you actually gaining?
Leave it to an ammunition manufacturer to come up with a "new" concept that basically makes you dependent on them to provide you ammo. Reminds me of the Remington E-tronics.

Hard pass from me.

They specifically mention that it is reloadable.

The Peak Alloy case is also reloadable when following Federal’s lab-tested processes and data.

I'm interested to know what those processes are. Also interested to know if this is where the world's supply of RL-26 has gone.

 

[dsotm]

Going to tank like 6.8W

 

[HandgunHTR]

They specifically mention that it is reloadable.

The Peak Alloy case is also reloadable when following Federal’s lab-tested processes and data.

The proverbial "they" said that about steel cased 7.62X39 and 5.56 cases back in the day too. Didn't work out too well. The amount of sizing required to ensure adequate feeding led to case life being about 2-3 shots. Not to mention that you couldn't anneal it so if the web didn't fail the necks split.

 

[Mikey_B79]

The proverbial "they" said that about steel cased 7.62X39 and 5.56 cases back in the day too. Didn't work out too well. The amount of sizing required to ensure adequate feeding led to case life being about 2-3 shots. Not to mention that you couldn't anneal it so if the web didn't fail the necks split.

Agree - if the process is onerous or has a high failure rate case life will be miserable enough that it won't be worth it. I'm sure there is some consideration around how they sell more boxes of factory ammo in all of this, for sure.

 

[axeforce6]

They specifically mention that it is reloadable.

The Peak Alloy case is also reloadable when following Federal’s lab-tested processes and data.

I'm interested to know what those processes are. Also interested to know if this is where the world's supply of RL-26 has gone.

I bet they stole all of the RL26.

 

[JAC8504]

i think someone needs it in a straight pull ... then rename it to the 280 impaler

 

[JAC8504]

i think i would stick to a 7mm mag or a 280 AI

 

[Lou270]

Federal can sell cases to other manufacturers to load. Hornady does this with the PRCs for
Ex. and people seem happy with that.

Lou

 

[mt100gr.]

i think someone needs it in a straight pull ... then rename it to the 280 impaler

Put a Scythe on the thing and have excitement on both ends!!

Seriously tho, I'm curious about the compatibility with current suppressors or if this could lead to another segment of that market? (FWIW, I'll be surprised if it takes off)

 

[Lou270]

Put a Scythe on the thing and have excitement on both ends!!

Seriously tho, I'm curious about the compatibility with current suppressors or if this could lead to another segment of that market? (FWIW, I'll be surprised if it takes off)

I am in same boat. I am sort of interested in the 277 fury as don’t need the hp of the 175+ that make 7mm sexy. I asked Q is trashpanda would support these high pressure rounds and they said not tested so not recommended. Dropping another 1k+ on suppressor is not exciting

Lou

 

[ARK_Ginger]

I think overall the cartridge is an advancement and the technology could have (hopefully will eventually) benefited a 6.5 or 6 short action cartridge

 

[Tmcgarrigle]

@mt100gr. beat me to it but I was going to say I just want to know how many cans this will blow up

 

[LostWapiti]

i think someone needs it in a straight pull ... then rename it to the 280 impaler

Savage is making it in a straight pull

 

[LostWapiti]

As others are saying I'm very curious to see how this plays out with suppressors. More chamber pressure does not necessarily mean more muzzle blast. I THINK it could actually lead to reduced muzzle pressure due to the pressure peaking sooner. We will need some testing to tell.

I am personally excited about the cartridge and believe it will do much better than 6.8W. I'm excited about true magnum performance out of short barrels. It looks to get just shy of 2900 fps with a 175 grain out of a 16" barrel. I also am excited by the slim cases as an extra round or 2 in the magazine is nice to have. I think it can easily dethrone 7PRC as well especially on the heels of powder gate. I am a reloader but could potentially be interested in this cartridge and just buying factory ammo if reloading doesn't pan out well. Even if you do reload and only get 3 firings I wouldn't consider that a failure for a low volume hunting gun.

Barrel life is a non-issue IMO especially with the new Seekins with quick change barrels. By the time I need to buy a new $600 barrel I will have spent $2k on ammo.

 

[ElPollo]

Curious as to why the case design on this cartridge is circa 1915 except for the case materials. It looks exactly like a 30/06-270 win-280 rem. Long action, skinny case, and no 35-40 degree shoulder. Seems like it ignores all of the improvements in cartridge design since PO Ackley. Perhaps the steel case is the reason for that. Maybe it won’t handle the steep shoulders.

 

[Tmcgarrigle]

Curious as to why the case design on this cartridge is circa 1915 except for the case materials. It looks exactly like a 30/06-270 win-280 rem. Long action, skinny case, and no 35-40 degree shoulder. Seems like it ignores all of the improvements in cartridge design since PO Ackley. Perhaps the steel case is the reason for that. Maybe it won’t handle the steep shoulders.

I wondered the same thing about the steep shoulders and cartridge design