Let's talk about 2 mile cartridges

Who carries CT long in the US. Only ones who so far have told

that they have a few, can actually touch some, are in AUS and NZ..

And how long is it. I have 10 cases of ours that we found in our bulk

585 shipment that formed up to 3.45" long when necked to 416..

Maybe later if I'm lucky get some made full length of the medium

machine about 3.61".. Ed
 
So it's going to be very badass being able to run at high pressure lbs with a larger capacity compared to just about everything minus the 50bmg. Hell sounds like it might be able to over take a the BMG if necked up to .50cal
 
Anyone see Shawn's new 375 Terminator???

It's all new no parent case. It darwfed a 338Edge and looks much bigger than the Cheytac.
 
Got a picture or measurements, is that like the

terminator case from NZ, it is about like a

steep shouldered snipetac. Ed
 
Anyone see Shawn's new 375 Terminator???

It's all new no parent case. It darwfed a 338Edge and looks much bigger than the Cheytac.

Hello,

It is not that much bigger than typical nonwildcatted CT case. Shawn is reporting 3203fps with 377gr CEB. Pic comparison to the Edge.
Pics from Shawn FB page.

THEIS
 

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He's still got to add the +p throat.

It also "appears" to be a CT case..you mentioned it has no parent case. Shawn doesn't say its not a CT case after someone on his FB page said it was from CT case.
Do you have case specs such as base diameter and OAL?

THEIS
 
Hello,

It is not that much bigger than typical nonwildcatted CT case. Shawn is reporting 3203fps with 377gr CEB. Pic comparison to the Edge.
Pics from Shawn FB page.

THEIS

It looks a good bit bigger than a wildcat cheytac. Got a 338AM on the far right and a edge second from the left.
 

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There are some "basic" Jamison cases that are longer than the "parent" design.

It still looks to be in the 505 Gibbs class. Same as Cheytac/Snipetac/Mercenary/Warlord, with a belt the Lethal, belted Warlord and Hubel.

Long is OK. 404 Jeffery class designs like the RUMs and Nosler work great.

If you take the RUM dimensions and scale everything equally up to the 505 Gibbs rim diameter. I see the "Terminator" or Mercenary.

I could be wrong but it's not exactly what I was looking for.

I don't know what it would take to get Jamison or Bertram to make a completely new rim diameter. We can but hope that someday I will have the opportunity to find out.
 
the 375 Mercenary is not anywhere close to 505 Gibbs or CT case diameter as they are .635" diameter at the web and the 585 Nyati and 375 Mercenary are .660" at the web, two very different cases, the bigger body is why we were able to get similar capacity of the Warlord, Lethal and HE in a case .220" shorter, now when I use the same case length of the others at 3.32" long the 375 Merc ll has an h20 capacity of 207.0 gr ... all I do is run my 375 Merc reamer in .220" for a deeper chamber and the capacity gain is gargantuan vs the other skinnier cases, imagine the 375 Merc case at 3.5" long ? or longer ? design was specifically engineered to be able to use the 375 Mercenary reamer in several case lengths to avoid having to wait for new reamers, the web area was purposely kept tighter in the original version to allow for running reamer in and longer versions will still have proper web diameter to prevent over expansion at the web and keep primer pockets tight ....... all the guys that bought the 375 Merc reamer basically got the 375 Merc ll for free !! the .010" taper per inch of case was added to the Merc simply because we needed it for the longer version to offer unrestricted extraction with 70 k psi loads, once longer cases arrive we will rechamber existing 375 Merc test barrel and continue with data accumulation .....

it will be the 375 H&H vs 375 RUM difference ...... for comparison ..........
the only similarity to the CT/Gibbs is the rebated rim of the same diameter so it will work on the CT boltface, same as the Warlord, Lethal Mag and HE



a 3.32" long 416 Merc would blow the 416 Barrett out of the water but we have a different, bigger case for bigger diameter bullets .........

our secret monster 375 Centurion project has spawned the 420 Enforcer last year and the larger cased 420 Blitzkreig......

after a year + in the making and waiting..... 11 tw 8 groove 38" barrels are on the horizon and will handle our prototype 1.0 bc 505 gr bullet and will also handle the newer 550 gr bullet, have also confirmed with CEB that they can make us 600 + gr MTH/MTAC bullets for the large capacity case ....

The 375 caliber is the NOW as we know it !
but we expected that and have been on the move to bigger and faster for some time .........
After much crunching and brainstorming we have come to the conclusion that the .404 caliber/.423" diameter bullets warrant thorough testing as that caliber offers the best of everything ...... .423" cal lands squarely in the center between the 416 and 510 cal .... same powders can be utilized without needing the BMG primers, No need for expensive, heavy BMG actions ..... we have a beefy .800" bolt, (Rem 700 clone) with 3 lugs, 5.0" port action in the works...... with a tennon to match the 2.5" barrel shank and the large diameter case ..... a faster barrel twist and length was unavailable but we have now overcome that, prototype bullets are on hand with several heavier weights coming , this will be an exciting summer for sure .....

even the God of war, Tyr himself would be pleased, as would Mars and Ares .....

in pic below is the 1.0 bc, 505 gr .423 caliber bullet next to the 338 Lapua Mag
 

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I don't know what it would take to get Jamison or Bertram to make a completely new rim diameter. We can but hope that someday I will have the opportunity to find out.

Hello,

If my memory serves me correct it should take around 70k USD.

When I find the case design I want we will have it made.
My desires are pretty high and I am looking at this from business venture so the "open source" type route is a no go for me.

Nonbelted.
Overall cartridge length 6.5 inches or under.
Limited to "bmg" sized bolt face as maximum.
Must be able to facilitate variations to include .510, .375, .338 projectiles.
Must be able to have consistent MV deviation of 5fps and under, so propellant burn rate must be optimized within the case, ie..case design must be designed with internal pressures, ignition and powder burn in mind.
Must have MV greater than 3800fps with 375gr .375 projectile and we are not concerned about barrel life; new projectile designs and barrel alloys solve that problem.

Not too much to want right....

THEIS
 
I think chambers are best is they have certain proportions
to get best speed with best barrel harmonics at same time.

Now to scale up the 3.31" long 375HE to a perfect 416 HE, first we must have
powder capacity increased by the the change in cross section of the bullet,
which is a ratio of 375cal to 416cal of 140 to 173 ratio cross section...

So with approximate math if we multiply our 375 base dia times 3.31" length,

and the 9x85 or similiar size case base times 3.6" long, if we could get them that long,

we get about that 140 to 173 ratio.. So that is why I say next best case series up

is that 9x85 series, to get speed and best barrel harmonics, and don't need

bmg actions, and the worry about that little rim edge on bolt face isn't needed,

like on my enfields the left lug supports case. And A .690 rim, the edge in .750" bolts on

special actions leaves .025" edge thickness.

So with that 9 by 85 or similar case series, with .680"-.685"-.690" base, 3.60" long,

we can get 416 bullet of 480-490 gr to same speed our 375 HE gets 400 gr...

And Bruces intermediate machine could build them ..Ed
 
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