Federal New Cartridge

[KenLee]

How many weeks before Hornady starts pimping out steel cased high pressure 6.5 needmoor? All the cool kids will want some.

I'd need some new hacksaw blades for a few Creed barrels Gotta slow em back down.

 

[Dos XX]

This is a tuner test. Same load and rifle
The only thing changed between targets is moving the tuner one notch.

What is happening to the barrel when the tuner gets moved?

This is not my test.

 

[z987k]

This is a tuner test. Same load and rifle
The only thing changed between targets is moving the tuner one notch.

What is happening to the barrel when the tuner gets moved?

This is not my test.

View attachment 821586

That for sure is waaaay to small of group size to tell anything.

 

[solarshooter]

That for sure is waaaay to small of group size to tell anything.

Also disagrees with other very thorough studies on this subject.

 

[Dos XX]

I am talking about the poi more than group size.

 

[BBob]

That for sure is waaaay to small of group size to tell anything.

Also disagrees with other very thorough studies on this subject.

With a short range BR rifle the sine wave that follows the change in the tuner setting is repeatable every time. I think the point Dos XX was trying to make is there is something going on with barrel harmonics.

 

[jselsor85]

Federal posted a clip on X saying a new cartridge is coming that will be offered in 80 different gun models. Announcement on Jan 7. Any ideas?

It’s the new 7mm Backcountry

 

[Dos XX]

Yes I am

With a short range BR rifle the sine wave that follows the change in the tuner setting is repeatable every time. I think the point Dos XX was trying to make is there is something going on with barrel harmonics.

Yes. The barrel harmonic change is making the bullet poi change without changing the load / velocity.

 

[BBob]

With a short range BR rifle the sine wave that follows the change in the tuner setting is repeatable every time. I think the point Dos XX was trying to make is there is something going on with barrel harmonics.

Yes. The barrel harmonic change is making the bullet poi change without changing the load / velocity.

I’ll add that the group sizes also seem to repeatedly follow the change in tuner settings.

 

[Sundodger]

That's the best sounding theory so far I think. I'll have to go find it and see what they're saying.

That would only decrease the dispersion if the wider muzzle velocity range is linked to the wider bullet drag range somehow, which I guess could be possible. Otherwise if they are not linked, then it should increase dispersion.


In engineering we call this the virtual condition.

 

[PsRpOiGrRiAtM]

It’s the new 7mm Backcountry

 

[Bluefish]

That would only decrease the dispersion if the wider muzzle velocity range is linked to the wider bullet drag range somehow, which I guess could be possible. Otherwise if they are not linked, then it should increase dispersion.


In engineering we call this the virtual condition.

Agree. Just threw it out there as a possible reason for people observing that the variability in speed is not showing up on target. Unfortunately researching it needs a Doppler radar, so any research would be limited to the manufacturers. It would be interesting to see if a BC SD and ES can be calculated.

In a perfect system, speed variation is low, bullet drag variation is low, dispersion from the rifle is low.

 

[Oddfellow]

It’s the new 7mm Backcountry

Is that what this post is still about 18 pages later?

 

[BBob]

It’s the new 7mm Backcountry

Is that what this post is still about 18 pages later?

 

[Mr. October]

Wow. The cartridge isn’t even out yet and it’s getting blasted here.

My favorite thing about the gun community. Everyone screams for innovation but when companies innovate the idea gets poo-poohed before it even hits the market.