Here is a comparison picture of two other big cases,
with our case in the middle. 1st is a 700NE,
2nd our 12GA Fh, 3rd my 700HE.Ed.

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

What is the ballistic difference between the three cases because they look almost alike with the exception of the bases and a little length here and there.

fabsroman--their relative power is more the function of
the gun used. Most 700NEs are in break actions and are loaded
down, 1000gr at 2100 fps.Our 12GA FH would be loaded to about same energy levels in break action also, but in Rob's gun that takes
high pressures( he has gotten 750 gr up to 3000 already),
loaded up to match my 700HE, which is designed
for bolt actions to handle 1000gr at 3000fps.Ed

I took one of my flat nose
Bridger 750 gr solid banded hollowbase bullet
and shortened the nose. Actually made a slightly rounded
nose solid of 500 gr. With hollowbase it was still
a decent length, at one inch.I got it over
2800 fps, at my moderate pressures.Just a little
experimenting. Everyone got designs and wants
their ideas for slugs tested, so we do it.Ed.

you guy must be cool
 

some people call me MR recoil for braking single barrel shotties with 3in magnums .a 585 nyati came in my gun shop today and the guys want me to shoot it well you guys just blew that right out of the water i'll be down the shop tomozza with the far out news you guys rock.

Nice project Hubel, glad I happen to run across this thread. And I have to agree, patent that name !! Keep us up on how the accuracy is running when you do the testing, Waidmannsheil, Dom.

Shot a 610 grain hollowpoint Dixie hard
slug into 6 gallon sealed pail of water.
Going 2800 fps, and real big hollowpoint.
First pic is pail with crimped on top.
Pail full and has filler spout capped.
Second pic,impact with water atomising,
and pail blowing apart.In the next small
fraction of a second is third after impact
with shelf cleared, the hyrostatic pressure
down, has bent top of steel frame shelf.
Same blast put jug pieces all over.
Got to get a 15 gallon one. Behind
you see my wood bundle backstop...Ed

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

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

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

I picked up a 12ga NEF Ultra Slug gun.
With 24 in shorty barrel.
Added weight and thumbhole stock.
Gun weighted to 15 lbs so
far. I got 600gr hard slug to
1650-1700 so far, and shoots easy.
Got 1 1/2 inch thick pad.Working up different
loads.Should get over 2000.
Cases eject easy,no resizing needed
on bottom half of case,action opens easy,
no evidence of binding.Started case 3.2 inch,
settled on case length of 3.15-- Chamber being
full size max 12ga size expands top half of case
more than my minimum chamber in Savage does,
so little more effort needed to size.Our case, though many times stronger than regular
12ga cases is thinner at mouth, so that is
why I used tight chamber on Savage.Still
can't get used to mickey mouse short barrel.
Anyone know of a genius who could
make long alloy barrel with pivot mounted?
Cases can be 3 inches on up to
our length, and work.Ed


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

When can I get my hands on one of them :D That's absolutely insane and awesome. How big of a powder charge? A 7mag shooting about 60, I'm gonna guess...230? w/ 600gr hard slug? crazy....

We got 600 gr slug to 2000 fps in NEF.Used ball
powder load. 230 gr. Case length of maximum 3.07 works.
Can use our case shorter, but load developement harder.
Anyone using our style case should also put in adapter
for shotgun primer. Save a lot of work
beefing up hammer speed and strength.Ed

Being some guns need to much work
to fire bmg primers, it easier to
do the following with adapter bushings.
Here is picture of cases for primer
comparisons.1st is regular bmg
primer. 2nd is adapted to a shotgun primer.
3rd is adapted to large rifle primer.
Of the 2 adaptations, large rifle is
easier to do, just ream out pocket, thread in adapter, but adapting shotgun primer
you have to deepen the original primer
pocket a little, then thread and screw in
a bushing.These two primers give about
100 fps less than bmg primer.Ed.

http://www.gunownerstv.com/209.jpg

I am interested in how you make all this stuff. I am assuming that these barrels you are using are not the standard barrels that come with the guns. For instance, can I go out and buy a 12 ga. NEF slug gun, grab a couple of these monster rounds from you and fire away? Somehow, I doubt it. The result would probably be a blown up gun and possibly a dead me.

How do you make the cartridges?

How much would something like that cost, if you were to make it to sell?

Duffy - First off, I'm not licensed to make stuff to sell.
Just do my own.You can set up with Savage, heavy barrel and
stock. Cases etc- for about a grand. Use NEF as is for milder
loads and our cases cut back to fit chamber.Gun and
cases $350, In both instances dies extra.

Fabsroman-I use NEF with barrel and chamber as it comes
from factory.Loads are milder than in Savage and cases
are shortened.All we are doing in NEF is a stronger brass case
allowing over a third more velocity, thus over 2/3
more energy.Here is picture of 3 cases with slugs and an
original bmg case with rim turned down and threaded for
the 12ga rim sections shown in pic.In a while I will
have rims, precision made like those in picture
for fellows to put on their cases, by doing their own
machining.Ed

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

Testing Savage with long case-Got 2550 with
320gr WC-855H special ball.730 gr slug.
Same slug,
300gr of RL-25 got 2400. 300 gr of RL-22
got 2800. 280 gr of W-760 ball got 2900.
Will hold more 760, but pressures around 40k on last
two loads mentioned.Savage extracts easy,
bellers like a tank gun.Ed