Target/ELR 375 HE..

[hubel458]

Wonder if PTRD with 5 ft long barrel is stable enough

for ELR , using our 416 hsm or .........maybe .458 HSM..........


Here is up north guy using 585 HE in a PTRD with inserts,

Light load.....Inserts are in the shape of the 14.5mm case....

 

[hubel458]

HERE is a video, 585 Hubel Express and water jugs - slow motion

750 gr with 155gr RE17, just a moderate load.....Ed

 

[hubel458]

Guys are still having trouble with various cases with too thick of sides. The thick sided case have enough brass material to thin up sides and stretch them way out to 4 or
more inches,,And they'd work with proper slow powders, we are working on a 458 HSM experiment, with case holding 400 gr ball powder under the bullet. ED

 

[hubel458]

We are working to find a good supply of cases to make the
458 HSM from, if it is possible,Ed

 

[hubel458]

20mm Vulcan is a big case that works ok, without having

the sides made too thick...They have thinner sides

than smaller cases guys are getting that have the sides

made too thick and won't extract easy or work with high pressures.


Here Barnard P Cheytac bolt that would do for our 416 HSM..Ed......

 

[hubel458]

Got guys doing various 416 HEs..

One just built a 416 HE, just been testing it a few days..

And using 168gr of HBMG 475 gr CEB, tested it, in good

conditions, 2 shots at 1800 yards and was within

a 1/4 of minute accuracy...A few shots at shorter ranges

had same accuracy. Ed..

 

[hubel458]

More about our 416 HSM from BMG brass, and
our 416 HE & 460 HE from our 585 HE cases
Got reamers for 375 HE, 416 HE and 416 HSM,....

460 HE & 460 HSM are all spec'd, got HE reamer
soon have HSM reamer...Our HSMs have a Wea type
radius on the shoulder..

The fellow that set up our 416 HE in an ELR rifle
and got 1/4 min accuracy,
They got some game out west over 1400 yds..
.Here is the gun they set up.
Using a K&P 34" barrel on a BAT action.....Ed

 

[Canhunter35]

That's pretty cool, I'd like to see the hsm case with the double radius shoulder

 

[hubel458]

It has the radius only from the sides to the
shoulder and shoulder to neck is regular
setup..Not a huge WEA type radius.Ed

 

[hubel458]

And have got a 460 HSM figured out, and the impetus for that is some
asking about one and the great line of 458 bullets CEB now has.
It will hold more powder than the 416 HSM.....Ed..

 

[hubel458]

Here is reamer print for the 416 HE..Ed

 

[hubel458]

The guys that did the super accurate 416 HE did another
416 HE that has an 8" longer 42 inch K&P barrel..

Used a Stiller action and same load with 475 gr bullet, as in
first gun and and gained about 200 fps with good accuracy.
3065 fps. Tested 2 groups of 3 and less than 1/2 min moa.
And loads they used are not the highest speed loads
the cartridge is capable of....Here is print with specs for
the 416 HE reamer chamber ....Ed....

 

[hubel458]

More about he guys that did the accurate 416 HE, they did a
416 HE that has an 8" longer 42 inch K&P barrel..

Used longer barrel and the same load with 475 gr bullet, as used
in the first gun and and gained about 200 fps with good accuracy,.
3065 fps. Tested 2 groups of 3 and less than 1/2 min moa.

And loads they used are not the highest speed loads
the cartridge is capable of....Here is picture.......Ed....

 

[hubel458]

We've had guys do cases on the Montana Rifle Co actions,

but now are getting word they are filling bankruptcy.Ed