585 HE -- Cases In Production --

hubel458

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Here is sectioned 585 HE case in the middle, we first made from


another case, years ago before we had factory run of brass and


it had perfect thickness on the sides and inside corrner.


We could fire them many times without sides thinning..


First case is factory run of our 585 HE, 3rd is case that is too


thick of sides and sticks at high pressures..





Pic of our factory run cases necked down to 375 and fired 4 times


at high pressure on the right, with unfired case on the left.


Our case is not perfect but does work...Ed


 



hubel458

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About 416 cal bullets............


The heaviest 550 gr for Extreme ELR probably be best 8 to 1 twist , in 416 caliber bullet,
and 520 gr 9.5 to 1, and 470gr 10 to one, Some barrels I picked up are 10 to 1.......


Now a novel idea is to lighten rear of bullet with small shallow hole drilled in base, might do better
long range.which would allow 10 to one barrel stabilize the heavier 550 gr bullets for ELR.
Making bullet nose heavier makes it more stable in flight, needing less spin,
like our hollow base 585 cal minie bullets only need 48 to 1 twist, or less
while out regular 585 bullets need about 24 to 1 to stabilise them..............


The winner of the King Of 2 Mile shoot last week was using 416 Barrett with a 1 to 10
twist, with a 500 gr CEB Lazer bullet, ...Robert Brantley, with Manners Stocks....


Paul Philips was third with a 416...


GOOD NEWS-- There is now an importer and seller of our 585 HE brass getting set up here,
in US, hopefully will be in stock, few weeks........ http://bertrambrass.com .. .. Caleb Hallet..


Have got another intermediate size action besides the Montana PH our guys working on,
to do speed testingwith. It is big long REM style action that can take our 416 HSM, ED
 

hubel458

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Experimental intermediate size action with the Montana PH, for comparison.


It is an experimental action for our 416 HSM, to do our speed testing with


and get a better action than Cheytac size actions, for bigger case ELR use,


without going all way up to more expensive, huge actions.


It is big long round style action that can take our 416 HSM, almost


1.6" diameter action and .800" bolt, with locking lugs nearly as big as most


BMG actions.... ED




 

hubel458

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Here is picture of the bolt from the experimental action,


with our 416 HSM case in it. Note the amount of the


base size of locking lugs, the amount of area on the bolt..









Here is link to guy doing special 585 HE in the EU,


Good pictures............www.585he.cz


We tested intermediate action with a 700HE barrel we had here.


Just temporary to test strength. 1000 gr over 3100..


Action worked fine.. Ed.
 

hubel458

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In 416 HSM got a 415 gr long target bullet 3800,


with plain barrel, no brake, on intermediate action,


Our 416 HE gets same 415gr bullet to 3300.Ed
 

hubel458

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Here is picture of our 416HSM cases with screw in shellholders,


for Ammomaster, etc, and slip in shellholders for regular presses


Also have some for big LEE Classic and Smart Reloader presses..


A 378 WEA MAG in picture for comparison...




Second is stacks of 416 HSM, about a third fireformed


and the rest to be fireformed... So far total about 1700, Ed













 

hubel458

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Bob Snapp, 90, the great Gun Craftsman, of


Clare, Michigan, passed away Jan 28th....


He was an esteemed member of the


American Custom Gunmakers Guild,


Being its president in 1992..He liked


working with Martini Cadet singleshot rifles


.Worked with guys testing armor long time ago.


Maybe the 1st to do 20mm necked down to 50cal


We lost a great friend,,,Ed
 

Bankrunner

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Sorry to here about your friend, hope he had a good passing and may he rest in peace.
 

hubel458

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.....




It is possible rig up holders for many types setups.,


About shellholder supply for big cases,


RCBS and others make slip in holders for shotgun cases


that can work or reworked for big rimmed rifle cases...


Here are various sizes.......


16ga-- .810" rim,........ 20ga-- .760" rim,....


24ga-- .725" rim,....... 28ga .680" rim....


Ch4d and Buffalo Arms also have these larger shellholders...




We fireform the 416 HSM with 65 gr of medium speed


surplus powder, with rest of case filled with farina


and grits mix, with a play dough plug in the neck.


It is loud, so we shoot it into big container through a barrel size


size hole, so the sound is muffled, so it doesn't deafen us..




It is great getting more companies making 416 caliber bullets,


long target and bore rider bullets. Ed..






....
 

hubel458

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hubel458

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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

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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

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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

jacobgun.jpg


And have got 460 HSM specs setup, the impetus for that is some
asking about one and new great line of 458 bullets CEB now has.

It will hold more powder than the 416 HSM and will get
a 572 gr as fast as 416 HSM gets a 475gr.....Ed..
 

hubel458

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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....

416heream.png
 

hubel458

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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....


jacobgun2.jpg
 

hubel458

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Here is print with chamber reamer specs for the
416 HSM chamber..There are 3 base sizes we have,
depending on actions used. Got reamers for all 3..
Got cases for all of them..
Our cases are public domain, so that is why I post
info and specs. Manson makes reamers I use,,, Ed.
416hsmream.jpg
 

hubel458

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Here is reamer print with chamber reamer specs for
the 460 HSM chamber .Couple guys getting set
to do 38-40 inch heavy 458 target barrels...Ed....
460hsmream.jpg
 


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