The 12ga FH case now is in the new COTW book on
last page in the wildcat section, I think page 324.
They gave good credit to Rob for the idea of that case....


The model 416 HE long case in middle, hydro formed one,

has case capacity of 240 gr, and the 416 HSM in picture,

on the right, we fired a case twice, capacity is 320gr.. Ed..




More info out now; short, fat cases sticking, pockets not lasting as expected.
Trying to get best speeds the things raising pressures are bad case
proportions, too sharp of shoulders, too fast of powders...........
and debth of the bullet into the powder space, as shown in the picture below..
My 375, 416, etc testing, bullets loaded like bottom one, in longer freebore....Ed.

rsm1961 wrote:

but my favorite is my AR15 in .50 Beowulf. It's a good 300yd gun for knocking down just about anything. My bullet of choice is a 400gr soft point. Does a lot of damage.

Great minds think alike.

80% castings machined by moi. Stoner bbl and PP brake. Troy block. Midland guard and end cap. All MOE furniture. Bushnell T-dot optic 0-x. Random detent/trigger bits, polished blade to fit slot. Scratch built at home. 200y hits on 8" AR500 plate = loud PING w/ 335gr Rainer CPHP. Using massaged PMAG's and they feed well if you ease the first round in. One of my fave targets is the 2 gal.
water jugs taped together at 50y. Total show stopper everywhere, esp. indoors. My upper fit's on any mil-spec AR-15 lower.

Love your thread esp. the page before this one. Nice fire-ball. Good stuff.

Keith said it best- bigger is better.

Now it's my keyboard that is full of drool Stovey.

Here is case measurements for our 416 HE target case
made from our 585 HE big belted case. Ed




Here is picture of 375 HE left, 416 HE next, 416 HSM right..




Here, tentative specs, 416 HSM case we are doing from bmg brass,





A 375 HE, with Lawton action, few are being done with those .....

A 585 HE ...shot with moderate heavy load......

scontent.cdninstagram....3184_n.mp4


Here is a 375 HE target gun set up, by Asteroid Precision...




Here is video of it being tested... And with a 350gr bullet about 3450-3475,

bolt opened easily with one finger...And he's just getting started

and is checking on better powder, Ed..



www.facebook.com/Aster...tion=group

Here is recap simple setup to get faster loads with 12ga sabots

& slugs, Example using break actions...., reaming chamber

in a 12ga break action to 3.5" with a 3.5" 12ga reamer, that isn't

something needing special order, and use 3.5" plastic cases , or

get 3.5" brass cases made. With mag shotgun primers and

our slower powder loads you can get a quarter more speed,

which gives 50% more energy...


585 Hubel Express video, 190ft/lbs recoil, heavy load, gun little light.....

www.youtube.com/watch?v=tyS9zZ8ElJA


Another view of Asteroid Precision's.... 375 HE target gun,




Here is our 416 HSM we are developing next to 416 Barrett, Ed

Here in picture of the cases, are shown the steps in making

our 416 HSM case, from BMG brass,, Ed




We might have a company that is doing a bolt gun with an action

between BMG size and longer rifle actions used for 375 HE,

375 Lethal, and Cheytacs.. To use for our 416 HSM without

having to do extreme rebating of the rim.


Here is picture of 620 416 hsm cases half done. Done on cnc ,

that slimmed them down, cut new rim and extractor groove.

There are over 500 more at cnc getting done now, plus we have

1000s more bmg cases we make them from, when needed..

This case is public domain and if anyone wants to make

them we can give the steps involved...Ed.

For big long cases our testing is showing that the 416 easier to get powders to work with, less problems ..
Maybe building a target gun,don't have 375 barrel all ready, maybe go 416....

We got cases, 416 HE and 416 HSM, as well as 375...
CEB and others will have bullets...CEB will be doing .416 in 450gr, 475gr, 500gr, 525gr and 550gr

Got sent 5 thick sided sample cases, same OD base as 585/375.416 cases, same belt, just .180" longer,
did a 416 HE, chambered extra barrel , cases stick over 50k. They have about .042" total taper, .021" per
side, when I necked couple to 416. That is a lot of taper , twice the taper of my 416HE...hanging up at 50k..

I could maybe go to 65k with these if we made taper with ..012" - .016" more taper to each side, but that is
no way to build target cases. I'd have to crunch down case shoulder diameter. And would look like 30-30.

And crazy part is, the case has enough brass material to thin up sides and stretch them way out to 4 or
more inches,, They weigh 150 gr more than our 585/375/416,, but with real thick sides they actually
hold less than our 416 HE with thin sides, that is .180" shorter...Our case does 65k ok without sticking..

And we can make super long 4" cases work if we had means to get them built, as we have
15 powders slower than HBMG.Here is pic of thin and thick sided cases, sectioned for comparison.Ed..