Federal New Cartridge

[Bugger]

Remi Warren did his contractually obligated ad on his FB page yesterday for the 7mm Backcountry. 228 comments already and all but a couple are negative. His followers are typically positive fanboys so it appears people are tired of the “new cartridge machine’ that the industry has become.

 

[dirtshooter]

Remi Warren did his contractually obligated ad on his FB page yesterday for the 7mm Backcountry. 228 comments already and all but a couple are negative. His followers are typically positive fanboys so it appears people are tired of the “new cartridge machine’ that the industry has become.

He's just shilling like other influencers. Dude was awesome when he was just the solo hunter.

 

[Bluefish]

Some light reading on the subject https://www.trapshooters.com/threads/a-test-of-fast-vs-slower-powders-winston.68141/. Make sure and expand the first post from Neil Winston. Unfortunately with his death, I can find links to his papers, but they no longer work. While the pressures are a lot less the difference between pressures as a % are more than on a rifle.

https://www.shotgunworld.com/threads/an-improved-detailed-analysis-of-shotgun-recoil.458418/

 

[Axlrod]

I’m all for advancements and see the benefits for certain applications and I’m sure will try it out myself at some point. But here’s how I view it now for hunting.
I can either buy a 7prc rifle, brass, dies or factory ammo for $50/box. Or I can buy a 7BC rifle which I’m guessing is going to be more expensive, more expensive dies, and alloy cases, or factory ammo for Im guessing $80-$100 box or more.
Both will probably achieve similar performance(guessing within 100fps) and I’m assuming close to the same recoil. It’s just going to cost way more to shoot the 7BC.
Also I would think this will change the minimum barrel length ratings for your suppressor. I would also assume a 7BC country is going to be pretty loud at 80kpsi out of a 16” Bbl no matter what can your using.

On the price of 7 BC, Powder Valley has it listed (not in stock) between $49 and $63 per box.

 

[littlebigtine]

He's just shilling like other influencers. Dude was awesome when he was just the solo hunter.

I think of Remi as a legend. But that doesnt mean im buying 7 bc.

 

[dirtshooter]

I think of Remi as a legend. But that doesnt mean im buying 7 bc.

I really like remi too I just hate the shilling but I get it he's gotta make a living

 

[MarkOrtiz]

7mm flatbrim

7mm broke-backcountry is one I heard yesterday and it made me laugh.

 

[z987k]

Recoil comparison for a 7PRC and 7BC at the same speed, with my best estimates of powder charge and accounting for higher muzzle exit pressure/powder velocity increase due to higher chamber pressure (e rif is the column for recoil energy):
View attachment 819370
Tiny difference in recoil. We could debate on muzzle exit pressure/powder velocity increase at bullet exit, or better yet maybe someone could run some Quickload/GRT iterations and post those pressure curves for assessment. But from this I don't see a benefit other than maybe the 7PRC cannot actually hit 3k in 20". Running a 28 Nos which I think can do that no problem:
View attachment 819371
So in that case there is a more noticeable difference. However I'm now a little skeptical the 7BC can even hit 3k in 20" at 80ksi... again need some Quickload investigations to see if that actually works.

Fundamentally though I don't see the benefit of higher mv with the 175 class 7mm - it's still an 8mph gun and terminal ranges are still STUPID far. It's just more recoil.

I ran it real quick through GRT, using the 280ai case and a 175eldx..... no powder in the database gets a 175 to 3000fps from a 20in barrel by 80kpsi. Best was 2930 with 59.2gr of powder. Muzzle pressure 16,981psi. Gas outflow velocity 3347fps.
7PRC about 2870fps at 65kpsi with 68.6gr, 20686psi muzzle pressure, 3319fps outflow velocity.