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.

 

[DangerRanger]

I’m not sure how a random factory load being crap would effect the 7RM long term

Tons of meh factory loads come and go

 

[DangerRanger]

Anybody know how the 130 terminal ascent does? I’ll probably go for the tmk but would have preferred a 130 at 3100 over the 153 at 2900

 

[rileybassman]

Anybody know how the 130 terminal ascent does? I’ll probably go for the tmk but would have preferred a 130 at 3100 over the 153 at 2900

It's a bonded bullet, but IMO a pretty good one. We have killed probably 6-8 deer and antelope with them with good expansion and penetration in each instance. I like the bullet more than an accubond.

 

[Remington92]

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.

I'd imagine it was also a semi easy way to cover rifle manufacturers to "certify" that their actions could handle the 80k psi in real world use in a limited controlled manner without everyone testing it on actions out in the wild already all at once. Even though I'm sure they knew the math was good they probably wanted to make sure they weren't going to be creating a ton of Kentucky Ballistics and 50bmg slap round incidents.

 

[Frozenlead]

Yesterday Proof posted up some velocities from some 143eldx hand loaded +peak out of one of their new PXT barrels. Around 3030FPS

 

[bnewt3]

I’m not sure how a random factory load being crap would effect the 7RM long term

Tons of meh factory loads come and go

Its a strange and unpredictable thing. Sometimes small things hurt significantly, other times a big thing is forgotten almost immediately. Smart play is to leave the old faithfuls alone to start.

 

[Smithb9841]

Yesterday Proof posted up some velocities from some 143eldx hand loaded +peak out of one of their new PXT barrels. Around 3030FPS

Can you post a link?

 

[Frozenlead]

It was on their Facebook page here’s the link. They didn’t mention any load data, but it was out of the new MTR fdx, so I believe that’s a 18”.

https://www.facebook.com/100064615574708/posts/pfbid02xVz2ppEsbAQkfVbLHJkiArmibrffrtGgidTHwdXirJhNpNVmwACPacnbtsBFoD2Cl

 

[omicron1792]

Anybody know how the 130 terminal ascent does? I’ll probably go for the tmk but would have preferred a 130 at 3100 over the 153 at 2900

I didn’t like it. Used on 3 deer. Penetrated deep with exits, but pretty small wound channel.

I like the 140 tipped fusion better. But if I had 6.5 creed I would use 155 tipped fusion or 153 tmk.

 

[S-3 ranch]

Anybody know how the 130 terminal ascent does? I’ll probably go for the tmk but would have preferred a 130 at 3100 over the 153 at 2900

Great ,
Both the 130 TA & 155 fusion imo would be a much better general purpose loading, especially when hunting medium size game such as elk , aoudad, ect
The TMK might have some advantage in accuracy? But is lacking in penetration on less than perfect shots and poor hunter shooting!
I’m just not a fan of match bullets on anything larger then a deer

 

[WCB]

Great ,
Both the 130 TA & 155 fusion imo would be a much better general purpose loading, especially when hunting medium size game such as elk , aoudad, ect
The TMK might have some advantage in accuracy? But is lacking in penetration on less than perfect shots and poor hunter shooting!
I’m just not a fan of match bullets on anything larger then a deer

Now you opened up a can of worms......

 

[LongWayAround]

Great ,
Both the 130 TA & 155 fusion imo would be a much better general purpose loading, especially when hunting medium size game such as elk , aoudad, ect
The TMK might have some advantage in accuracy? But is lacking in penetration on less than perfect shots and poor hunter shooting!
I’m just not a fan of match bullets on anything larger then a deer

Have you shot or seen a 153TMK?

 

[S-3 ranch]

Have you shot or seen a 153TMK?

No , I am running 140gr TGK right now, and they are a little bit mushy for my taste, so a tmk would be even more splashy

 

[DangerRanger]

Great ,
Both the 130 TA & 155 fusion imo would be a much better general purpose loading, especially when hunting medium size game such as elk , aoudad, ect
The TMK might have some advantage in accuracy? But is lacking in penetration on less than perfect shots and poor hunter shooting!
I’m just not a fan of match bullets on anything larger then a deer

That was not my experience shooting the 130tmk into deer. Have you had a different experience or are you assuming?

 

[DangerRanger]

Sounds like I’ll be ordering the tmk, and just enjoying that it’s factory loaded and more mass for the same speed as my hand loaded 130s (hopefully)

We will see how the recoil increase is

 

[omicron1792]

That was not my experience shooting the 130tmk into deer. Have you had a different experience or are you assuming?

S-3 has lots of experience. But he doesn’t like match bullets. No worries either way. If you like bonded then he’s your huckleberry. If not, he’s not.

I find tipped fusions to be kind of a mix. Still fractures with some explosion, bur the main core stays intact and drives deep.

That said, I think @Formidilosus has said he’s getting exits from most of the new larger tmks. So that kind of takes that line against match bullets away.

 

[JohnJohnson]

I wonder why the TMK 153gr has about the same G7 BC as a 143gr ELD-X. Or I guess it's just Hornady's BC's being weirdly high for their grain weights since the 156gr Berger EOL has a slightly lower BC than a 147gr ELD-M.

Either way I now have a box of 153gr TMK +Peak and a box of 156gr EOL +Peak on preorder.