6.5 creed magnum

[naked wombats]

AFAIK DoD has been testing high pressure 6mm ARC loads. Not sure about .22 ARC, but that would definitely pique my interest.

Interesting. Come to think of it, somewhere on the federal page I did see something about case grip mentioned. Maybe at 80k with the peak alloy it blows out fast enough to grab like an Ackley case?

 

[Xycod]

I got this in pretty exact words, look for the most popular hunting rounds of the last 10/15 years in medium sized slender type cartridges. No belted mags and older stuff is in the pipeline, it’ll be much later of ant all. Also no cases larger that 308 head size. So the most popular hunting rounds of the last decade or so, whatever that means. I got that no prc/wsm type cases will be done. Leaves you to wonder. 556,308 and 243 is pretty close to confirmed was also in the conversation. Most likely shot next year will be new introductions.

 

[BLJ]

bolt thrust.

Could I get a layman definition of this?

I have an idea but would like some verification.

Thanks.

 

[naked wombats]

Weren’t the creeds limited to 62k and now they are getting 80k?

Creed at 62k was bolt and AR10 approved. I was under the impression the AR15 platform had bolt thrust issues with grendel and arc cartridges, hence the 50k spec.

I know in contenders this is an issue as well, and Ackley improving some chambers actually reduces bolt thrust as the cases with less taper grip the chamber better.

 

[nm.otter]

Could I get a layman definition of this?

Rearward force exerted on the bolt face and lugs by the case head.

 

[BLJ]

Rearward force exerted on the bolt face and lugs by the case head.

That’s what I had in mind.

Thanks.

 

[ckt3]

I doubt the arcs will get it as they are already limited to 50k psi for AR use. Would be sweet though.

They gotta take the chains off the factory ARC ammo. Just make the box neon yellow and have BOLT ACTION ONLY in bold letters.

 

[bruceleroy]

We all know faster is deader is gooder. More gooder is betterer.

As a hunter killing critters between 30 yards and 400 yards, with the vast, vast majority inside of 250, how exactly is this helpful for me compared to a standard 6.5cm?

You could consider the fact that not every product was made for you

 

[teflonhunter]

As much as this does for the 6.5, imo the ultimate game changing caliber I hear is coming will be the 308. Adding 300 fps to a 308 is getting box velocity of a 300 win, that’s huge. Add to that the already huge availability, the price, the fact it’s available in ar10s,scar’s, and countless others, to have that to go along with the 6.5 would make a lot of calibers almost obsolete, other than just a want I guess.

But a 18/20 inch 308 at 2900/3k for 180s in a short action, that handles most anything anywhere short or long.

You mentioned how this would help 308 in semiauto rifles. I think that could spell trouble for some semiauto rifles. Most are designed to work within a certain pressure parameter.

 

[jpilot77]

Only in a bolt gun. All the AR based cartridges are pressure limited by the action and are faster if loaded for a bolt gun.

I saw that Federal is going to be selling this technology to the US military. That’s where this technology got its impetus, the military wants 14” barrelled M4s with long barrelled velocities. Also heard they are also testing the Proof PXT barrels with these high pressure ammo to gain barrel life especially in the belt fed machine gun configuration.

 

[Bluefish]

I saw that Federal is going to be selling this technology to the US military. That’s where this technology got its impetus, the military wants 14” barrelled M4s with long barrelled velocities. Also heard they are also testing the Proof PXT barrels with these high pressure ammo to gain barrel life especially in the belt fed machine gun configuration.

The only way the AR will handle more pressure is a redesign of the bolt/barrel extension. It can be done, but probably won’t be backwards compatible.

 

[Bluefish]

Weren’t the creeds limited to 62k and now they are getting 80k?

Yes, but that’s a brass pressure issue. The AR is limited by bolt thrust and that’s a function of the case diameter and pressure. Not going to get an 80k pressure in an AR with any reasonable diameter.

 

[omicron1792]

Yes, but that’s a brass pressure issue. The AR is limited by bolt thrust and that’s a function of the case diameter and pressure. Not going to get an 80k pressure in an AR with any reasonable diameter.

Unless the case truly does contain the pressure, causing no new bolt issues.

 

[Escalante11]

I got this in pretty exact words, look for the most popular hunting rounds of the last 10/15 years in medium sized slender type cartridges. No belted mags and older stuff is in the pipeline, it’ll be much later of ant all. Also no cases larger that 308 head size. So the most popular hunting rounds of the last decade or so, whatever that means. I got that no prc/wsm type cases will be done. Leaves you to wonder. 556,308 and 243 is pretty close to confirmed was also in the conversation. Most likely shot next year will be new introductions.

Any mention of timelines? Curious if we start seeing this ammo for other cartridges by the end of this year. I'd imagine Rokslide alone could make it worth it for Federal to load 243 + Peak

 

[UnckleBob]

Any concerns with the higher pressure and barrel/throat erosion and life expectancy?

I don't think many people will be shooting thousands of rounds using hunting ammo. Competitive shooters, who do burn out barrels , are always going to want to shoot the lowest recoiling option available.

 

[ckt3]

I got this in pretty exact words, look for the most popular hunting rounds of the last 10/15 years in medium sized slender type cartridges. No belted mags and older stuff is in the pipeline, it’ll be much later of ant all. Also no cases larger that 308 head size. So the most popular hunting rounds of the last decade or so, whatever that means. I got that no prc/wsm type cases will be done. Leaves you to wonder. 556,308 and 243 is pretty close to confirmed was also in the conversation. Most likely shot next year will be new introductions.

How’d you hear this?

 

[UnckleBob]

There are some concerns I have had here , in no way is anything 100% a good thing, there is and always will be toss ups



Cons all actions are built and designed around 65,000 PSI. IMHO I do feel we will see repercussions running a heavy diet of 80k psi through a lot of today’s actions it’s not talked about but Inherent receiver flex is present in all actions under pressure , stillar, defiance, impact, pure precision these actions will hold up way better , I do however see mossberg patriots and cheaper made rifles such as fall through the cracks of being able to rely on consistent return under those pressures

The entire reason the Peak Cases (and Sig's hybrid case) exists to to limit the amount of pressure the action has to contain.

Let's say the new ammo is at 80k psi and a M700 action is designed around 65k psi. All the case has to do is reduce the pressure the action has to contain on its own by about 15k psi.

Bottle necked brass rifle case technology is approximately 150 years old. According to what I have read, the most pressure generated by firing a round occurs near the case head. Using modern material science, it is not hard to imagine that the steel base of the Sig case and the steel alloy case of the Federal case can pull off something brass cannot.