Federal 6.5 Backcountry?

[ARK_Ginger]

6.5mm Creedmoor has minimal case taper, square shoulders, tight chamber specs, and was designed for long, high-BC projectiles.

Legacy cartridges lack the aforementioned features and could easily turn increased chamber pressures into increased bolt thrust.

Yes I agree, but with our over litigative world I wouldn't have been surprised if they left it factory ammo only. That way they didn't need to publish 80k PSI load data for a legacy cartridge.

 

[Mike D Texas]

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.

I can’t say for sure on the peak alloy cases but the NAS3 cases definitely have more capacity. 2+ grains more powder in a .308 case than a brass equivalent. I’ve heard them quoted as having somewhere around 10-11% more capacity.

 

[bnewt3]

I think it’s a good thing. Less recoil, shorter barrel 6.5 PRC.


My question would be since they did the Creedmoor why didn’t they do 7Rem mag +peak? Instead having to buy a brand new rifle in 7mm back country.

I love my 7BC 16.5 inch Barrel. But would have been nice to just buy a new barrel instead.


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Another reason to pilot with a new cartridge is that if its a failure, its a failure that doesnt affect any existing cartridges.

If you started with 7RM(or any other existing cartridge), Peak being a failure could tarnish the 7RM reputation and existing sales(which is considerable), and creates a weird footnote on the 7RM.

If Peak is a commercial failure with 7BC, it doesnt affect or minimally affects anything else.

Its a weird thing because its simultaneously the safe and risky play.