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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.
 

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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..









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


 

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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
 

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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













 

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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
 

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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..






....
 

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Wonder if a PTRD with 5 ft long barrel is stable enough


for ELR , rebarrel to 416 and use our 416 HSM, 500 gr bullet ....


.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....




https://www.youtube.com/watch?v=jyabm-cbwgc&feature=youtu.be




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


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




 

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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......

 

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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..
 

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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


 

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Some sites they won't bring up pictures I post the URLs for,

ans all pictures I do I host on my site,

until we right click and hit post in new tab,

then they show up in the tab.page...

Why it goes that way I don't know...Ed
 

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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..
 

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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....


 

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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....




 

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Away for a time, sickness..
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. To help guys do their own setups.
Manson makes reamers I use,,, Ed.
 

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With 40 inch barrel 416 HSM ,475 gr, get 3650, over 13,000 ft lbs muzzle energy.
Got guys getting set to have 38-40 inch 458 barrels made for 460 HSM.Ed..
 

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More info on this gun, we did it for testing 416 HSM with a rebated rim,
to check in intermediate size actions, with the longer, stronger, bolt lugs, Ed..
 
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