6.5 Needmoor ~ Federal +Peak

woodchopper said:
bah!!! I run 200grn bullets at 2960fps out of my 300WM, and 110grn out of the 25-06 at 3000+fps

don't need no stinking 80k PSI

it is kinda cool, but there is no way it doesn't shorten barrel life like any other overbore.

might have to buy a 6.5Cre now.... :) se how fast I can burn out a barrel.
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Guessing about as fast as 6.5 PRC or anything that already sends those bullets at those speeds haha
 
adamthebad said:
Because liquids cannot be compressed, (over oil /solvent left behind) the liquid cannot escape. It flattens into an ultra-slick fluid bearing matrix along the chamber walls under pressure.
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Dude its just called fluid film and it still has the effects of friction from shearing forces inside the fluid under load. Again that is just a very very surface level explanation of the physics let alone the fact the entire surface area would need to flooded with a incompressible fluid, which its not.
adamthebad said:
You are completely confusing dimensional compatibility with structural engineering margins, and your entire argument completely collapses the moment you apply actual material science.

You honestly believe that because a custom gunsmith can physically machine a chamber reamer into a pre-existing steel blank and thread it onto a standard receiver, it magically makes the underlying factory steel safe for a lifetime of hyper-pressure abuse.

You're treating a high-pressure reciprocating machine like a Lego set, entirely blind to the distinct difference between geometric clearance and metallurgical yield strength.
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Dude you aren't an engineer because if you were you'd know you much of what you saying is just entirely speculation. You're talking about metallurgical yield while this cartridge will be used in dozens and dozens of different action designs and manufacturing processes.

I would LOVE to hear what your technical background is.
 
adamthebad said:
You're missing how industrial factories actually handle manufacturing metallurgy! When a major company like Weatherby or Christensen Arms prepares an assembly run for a high-pressure 80,000 PSI line like the 7mm Backcountry, they do not change the outside shape of the rifle to make it look different for marketing.

They upgrade the internal material specifications
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How do you know this to be true? Is this what Weatherby told you directly? :)

You demonstrate an absolute, total lack of understanding of firearms.

You know how many rifle manufacturers decided "Hey, Federal came out with this cool new 7BC cartridge. What we are going to do is stop production of all our rifle actions, bolts and barrels to upgrade internal material specifications, structural tempering, and alloy selection to increase the steel's yield strength."

I'll tell you how many- ZERO. If they needed to do all that nonsense they would look at it from a financial perspective and just say 'screw it, we already make rifles in 7RM and 300 Magnum so people can buy those if they want similar performance.
 
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adamthebad said:
Federal did not just change the case; they had to completely change the chemical structure of the primer composition and shell case metallurgy just to keep the primer from blowing straight out of the case head at 80,000 PSI.
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They changed the chemical structure of the primer? Where did you hear this?

Federal uses their own 210 primers in the 7BC
 
I know, any higher speed 264 cal would never ever be popular, right? Imagine someone did one on a 30-06 case or like a 264 Mag? Heaven forbid they did that much capacity with an even smaller bullet diameter like necking a 30-06 down to 25 cal! No one would EVER want one of those...

Oh snap wait lmao

Wonder how it compares to a 270 with 55+ grains of powder like with 130gr 3100 fps and over? lol

The stuff ya read here sometimes ;)
 
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adamthebad said:
Federal did not just change the case; they had to completely change the chemical structure of the primer composition and shell case metallurgy just to keep the primer from blowing straight out of the case head at 80,000 PSI.
Federal built this themselves. not some side contractor.
The fact that Federal engineered the entire K510P18 / NM002C-01 configuration internally proves they had complete corporate control over both the internal safety warnings and the commercial retail packaging layout
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I’m having trouble understanding where the primer would blow out too? Through the firing pin hole?
 
This thread is hilarious. Kinda like what would have happened back in 1915 when the 250-3000 was unveiled and if the internet had already been invented by Al Gores grand pappy…..🤣

Hard to believe that breaking 3000fps is still a “thing” 111 years later
 
A well thought out idea is shortening an existing case to use longer bullets in a short action, and then guys buying it in a standard/universal action like the Tikka.
 
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