Federal 6.5 Backcountry?

As cool as a 6 ARC would be, I can’t see them loading “bolt gun only” loads. The limitations of that cartridge in its factory form are the pressure constrains of the AR platform for which it was designed.
 
Can these be reloaded? I’d be curious on accuracy as well. Speed is cool but speed doesn’t always equal accuracy
I know area 419 is working on dies. According to their latest video it seems like neck tension is a super critical component to making this whole thing work.

The video mentions 1/4 thou and 1/2 thousandths neck tension, rather than 2-4 thou with brass cases.
 
Can these be reloaded? I’d be curious on accuracy as well. Speed is cool but speed doesn’t always equal accuracy
From what all the media and several people on ig say, the answer is yes, but it needs some special attention given to the neck. M2_collective on ig says he’s loaded a few hundred but doesn’t use any expanding mandrill on the neck. Area 419 stressed that the tolerances of the neck sizing is down to the .0005 +/- .0002 instead of normal brass being around .001-.005.

One other thing that area 419 brought up was that, in their opinion, the peak alloy case actually grips the chamber better than the other high pressure cases currently available. I’m going to assume he’s talking about the NAS3 cases from shell shock tech and the 277 furry cases.
 
I want to know if anyone is shooting the 6.5 creed+peak out of their sig cross? It is a slower gun with its 18" barrel. Its also kinda picky with factory ammo. But if you can gain 100-200+ fps out of what is an already handy compact rifle this would be amazing.
 
From what all the media and several people on ig say, the answer is yes, but it needs some special attention given to the neck. M2_collective on ig says he’s loaded a few hundred but doesn’t use any expanding mandrill on the neck. Area 419 stressed that the tolerances of the neck sizing is down to the .0005 +/- .0002 instead of normal brass being around .001-.005.

One other thing that area 419 brought up was that, in their opinion, the peak alloy case actually grips the chamber better than the other high pressure cases currently available. I’m going to assume he’s talking about the NAS3 cases from shell shock tech and the 277 furry cases.

Being monolithic vs 2 piece brass probably helps.
 
Has anyone seen mention of how much the case capacity has increased? I haven’t heard it mentioned. The only thing that keeps coming up is a 100-300 fps increase with the same bullet.
 
Has anyone seen mention of how much the case capacity has increased? I haven’t heard it mentioned. The only thing that keeps coming up is a 100-300 fps increase with the same bullet.
Total conjecture, but I think any capacity increases are minimal, and probably secondary to thinner walls.

I’m confident the pressure gains are from using faster burning powders.
ie 43gr of Varget or 8208XBR in a Creedmoor with the 153tmk, vs a standard pressure 40gr H4350 with the same bullet.
 
Total conjecture, but I think any capacity increases are minimal, and probably secondary to thinner walls.

I’m confident the pressure gains are from using faster burning powders.
ie 43gr of Varget or 8208XBR in a Creedmoor with the 153tmk, vs a standard pressure 40gr H4350 with the same bullet.
If the Peak+ cases are similar to NAS3 in that they also use thinner casings, then added volume would factor into the added velocity for Peak+. For example, steel NAS3 cases have "11%" case increase for rifle cartridges and that is the primary mechanism for their increased velocity, assuming use of a slightly slower powder (rather than increased pressure), as evidenced by added velocity that is less than what Peak + delivers. I played with 6.5CM case volumes in Gordon's reloading tool and was able to replicate NAS3 velocities solely based on increased volume and a slower powder, while remaining under 65K PSI (SAAMI is 62K).

Faster powders for Peak+ are definitely indicated by the 80K pressure, as there would be insufficient case volume (even if >11% increase like NAS3) in 6.5CM to run enough H4350 or similar powder up to 80K PSI.
 
Total conjecture, but I think any capacity increases are minimal, and probably secondary to thinner walls.

I’m confident the pressure gains are from using faster burning powders.
ie 43gr of Varget or 8208XBR in a Creedmoor with the 153tmk, vs a standard pressure 40gr H4350 with the same bullet.
Yeah, that’s kind of what it seems like. Googles ai overview said the same thing but when I tried to find its source it just used the standard case capacity from Wikipedia instead of anything to do with the new case.
 
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