King Of 2 Miles....

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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 corner.

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..

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Here is 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

he4times.jpg
 
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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 testing with. It is big long REM style action that can take our 416 HSM, ED
 
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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 and .800" bolt, with locking lugs nearly as big as most BMG actions.... ED

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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...ED

interboltp.jpg
 
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Spearpoint ELR Roundup
Ride the wind in Kansas
August 11 & 12, 2018

ELR match will be held at Spearpoint Ranch near Lincoln, Ks.
Spearpoint $1000 Three Shot Challenge will be held Saturday Morning.

ELR match will have 7 steel targets from 1500 yds out to 2900 yds.
Competitors will fire 4 rounds at each target on each day for a total of 56 rounds.
Scoring will emphasize first round hits with declining point values per attempt.

Calibers up to and including .50 BMG welcome. All shooting will be from a prone position.

Cost is $80 per shooter. An additional $20 for those wishing to try the Spearpoint Challenge
 
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We tested intermediate action with a 700HE barrel we had here. Just temporary to test strength. 1000 gr over 3100..
Action worked fine.. Ed.
 
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Here is video of early water barrel test of the 12ga From Hell, from years ago.



Here is picture from that video..

Shot%203.jpg

Here is the intermediate size action for 416 HSM with test barrel, .Ed

intertargetp.jpg
 
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In 416 HSM got a 420 gr long target bullet 3800, with plain barrel, no brake, on intermediate action, Ed
 
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Here is picture of our 416HSM cases with screw in shell holders, for Ammomaster, etc, and slip in shell holders 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 fire-formed and the rest to be fireformed... So far total about 1700, Ed

hsmholders.jpg

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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.

We lost a great friend,,,Ed
 
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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..

Here are various sizes........

16ga-- .810" rim,

20ga-- .760" rim,

24ga .725" rim,

28ga .680" rim....
 
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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..



....
 
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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....

 
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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
 
.

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......

http://www.gunownerstv.com/barnpchey.jpg
 
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..
 
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

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..
 
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
 
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
 
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
 
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