Let's talk about 2 mile cartridges

[THEIS]

THEIS-- do you or your company have some 9 X 85 cases. Ed

Hello,

We do not, for past 2 days I have been trying to get down to who owns the x85 and x90 case designs. MEN says HK owns it, HK says MEN owns it. By the time I finally reach the proper executive to discuss design purchase I could probably have new improved design completed.

I have a x90 case coming from GSG9 when we can finally get it cleared from their archives. They do not have a x85 or x77 case though. From talking with them there was only 25 of the x85 cases made so I stopped searching for one.

THEIS

 

[hubel458]

Grillmayer used same brass only shortened to make the 416 Tyr,

with the 6,53 Ginex primer. He is gone. Who has them or the basic case

of the same base size? Ed

 

[THEIS]

Grillmayer used same brass only shortened to make the 416 Tyr,

with the 6,53 Ginex primer. He is gone. Who has them or the basic case

of the same base size? Ed

Hello,

I think fortmeier in Germany know has rights to that.
They are offering their rifle chambered in the 416TYR
Daten

THEIS

 

[hubel458]

I'm going make a 416 HM case with a base of .690" and 3.62" long

from bmg brass like 9x 85 only longer, 30 degree shoulder, short neck

with my case lathe and little annealing and swaging.

I have reduced the bmg bases to .720" for other uses, just go further.

Couldn't make them in volume. But just to see what they look like

and with that correct proportioned chamber. maybe find extra barrel,

test for speed....Good experiment..Ed

 

[hubel458]

From our experiments, if we cut bmg case off at 3.52'' leaves neck of

about .250'' long, then rework,anneal, and swage case down

to about .690-700" base and about .670'' shoulder and case

will lengthen to about 3.62-3.64''. A bit of work, but fun hobby.Ed

 

[THEIS]

From our experiments, if we cut bmg case off at 3.52'' leaves neck of

about .250'' long, then rework,anneal, and swage case down

to about .690-700" base and about .670'' shoulder and case

will lengthen to about 3.62-3.64''. A bit of work, but fun hobby.Ed

Hello,

So pretty close to same length as the 460 Steyr but with shorter neck and "fatter" shoulder to base taper?

THEIS

 

[THEIS]

Hello,

Those with QL...Does the 9.12x77 Lapua Magnum still show in the software cartridge list by chance?

THEIS

 

[Alan Warner]

Yes, it is listed . the 9.12x77 Lapua Magnum is listed as experimental
Alan

 

[THEIS]

Yes, it is listed . the 9.12x77 Lapua Magnum is listed as experimental
Alan

Thank you Sir.

The Lapua 9.12x77 was the "father" of the 9x90 MEN cartridge.
The Lapua 9.12x77 launched a 22 gram (340 grs) FMJ bullet that has muzzle velocity of 1050 m/s (3445 fps).

HK ceased their partnership with Lapua before this cartridge ever would come about. HK then partnered with MEN for the 9x90 MEN.

Now for "small" cartridges the 6.5 Lapua Magnum had some very "interesting" ballistics too 139gr Scenar at 3780fps.

THEIS

 

[Deleted member 46119]

Hello,

Those with QL...Does the 9.12x77 Lapua Magnum still show in the software cartridge list by chance?

THEIS

9.12 x 77 Lapua experiment.

Yes it is.

 

[hubel458]

Picture with tentative specs of our 416 HE case, and we also

have drawings also for what a 395 HE, 408 HE, and a 435 HE would be.

We'll have these specs confirmed by next week and reamer

prints at reamer guys next week.

 

[ELR Researcher]

Please note the thread title, "Let's talk about 2 mile cartridges."

Frankly, I'm amazed at the push back on going to a .50 BMG-bolt-face cartridge. The amount of money needed to make a CT or .585 HE or similar case work for max range versus a cartridge design that steps up to a .50 BMG-class action? Really, are you guys masochists or trying to save your back or? In case it was missed along the way, the ELRC "record" criteria state:

H) Equipment.
a. There is no limit on caliber, cartridge or bullet.
b. There are no restrictions on optics or aiming devices.
c. The overall weight limit of the rifle is 50 pounds which does not include: bi-pod, pedestal, front or rear support.

You can build a LOT of rifle in 50#.

 

[Deleted member 46119]

Again we need a like button LIKE

I have not weighed my 50 DTC. It might need to go in a diet.

The 375 HE will start with a hunting stick and whippy barrel at 16# With titanium barrel shroud or other "wrapping" and the milled stock, more.

 

[hubel458]

With me it is the correct chamber proportions to get best barrel harmonics, with speed

needed, and full diameter bmg brass necked down to 375 proportions wrong, and if the bmg brass

is used as 50 cal it is too short inside and the inside chamber shape wrong for

the best chamber proportions. If used 50 cal and done right , powder space lengthened, with correct bullet

to compare to proportions and BC of Mitch's experimental bullet it would 1000 gr at 34-3500,

and the heft of barrel/gun to get the harmonics tamed down at that speed and bullet weight would be 100 lb gun.

And our cases 5 bucks, good for many firings,, winning action 900-1000 buck lawton or others similiar.

The good scope that is needed costs more than the action, barrel, stock, our cases and die. Ed