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12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

 
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  #85  
Old 07-17-2013, 10:49 PM
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Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

Here is picture of current 58cal slug options that
you can get molds for from Lyman,
Just make sure they are .574" to .577" diameter,
the best size for the 12ga sabots.




A barrel of 585HE cases..Ed



Made by Bertram and I tested them to max loads and cases hardly expanded,
650gr over 3000 fps. The same draws used by him to make high pressure
Cheytac cases, and to finish mine just uses belted header and cases left
straight and trimmed longer.He makes tens of thousands Cheytac steady all
the time now and can make ours steady also when needed.....Ed
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  #86  
Old 08-21-2013, 11:16 AM
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Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

One of our sabot testers with tight barrel, Abolt, with wide lands in
the barrel, who couldn't do any good at all with our sabot and Alliant Steel
and one type of slug, had to go to IMR 4759.
It would twist up the sabot petals. Terrible accuracy.

My guns have NEF/Sav size barrels and worked fine with Steel as well as 4759.
Petals open perfect. The Abolt barrel is about .005" smaller than NEF/Sav and
the lands over twice as wide as the NEF. And has real narrow grooves.
Guys with Nefs say sabots open fine like ours here.

He went to different Minie slug and our slow powder loads using
IMR 4759 powder up to 78-79 gr and finally got down to 2.5" group, I told him
go to max which is about 80-82 in 3" case.That barrel is like a lot of
EU made barrels and many are replacement or add on barrels in many slug guns,
and that is reason why it is so hard to get accuracy across the board in
sabot shooting in all guns--Takes a lot of work.. Another tester with NEF 12ga using
Alliant Steel with sabots got good groups like we did here. I tell guys if
problems occur go to 4759.

What was happening to sabot petals in the barrel, with the extra tight fit and
wide lands were petals twisting.. The wide lands were not cutting into the base of
sabot like in NEF/Sav210 barrels. The twist effect of rifling was on the surface
of petals, twisting them. It was not getting good hold on the sabot body. The
4759 starting slower allowed the sabot to get its spin started up to speed
with the wide land rifling and narrow grooves..It is just the opposite of
way NEF/Sav 12ga barrels are done. with narrow lands which impress into
the sabot base the way it is supposed to work..I showed pics above of the
good rifling marks impressed into our sabots.

I think after this experimenting run I feel that a lot of accuracy problems
across the spectrum of barrels are due to barrel differences, and not just
the differences in factory slugs and/or reloading components.

Here is pic of bag of our 585 cases with plain head if some need them for
wildcatting.We have quite a few. Fifteen have 585HE cases now. 585 gun
building is accelerating. We can get folks going with 100 cases, dies, and soon
a barrel; and shipping, for 750...Ed

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  #87  
Old 09-15-2013, 12:00 AM
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Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

Here is picture of our 12ga sabots with the marks that the barrel lands made, marked with
black marker. The one with narrow mark is Savage barrel and one with wide mark is
an Abolt barrel. And the ones fired in Savage and NEFs with the narrow lands the marks
impressed into the plastic getting good bite and not twisting the petals. The one from abolt
he used slower powder for easier start and it open petals ok, without twisting petals like
the faster powder did for him.


..
Next is picture showing top edge of sabots. Our sabot on left you roll crimp down over
the inside of it a little . We have lots of them yet.
The other factory sabot they crimp real short and sharp
180 degree crimp down on top of it.



We see a use for modified 585 application in Indiana deer hunting. Mainly shotgun only, but
they also allow rifles with over 35cal pistol calibers; and any over 35cal rifle with a case
1.8" or shorter, usually short wildcats. So we have the the 585 HI... The I is for Indiana.
Here is picture of it next to the kinda little 500 S&W. 585 HI holds over 80 gr powder.

Next picture is a Magtech chambered for it. Gets 440gr Minie over 2,100 fps.
The .585"- .587" Minies of 440gr, 540gr, etc work in it, and they're good deer slugs
We got other guns with it going into; bolt guns, like in the last picture,
single shots and checking couple lever actions.
Might work great in MNs many guys like....Ed





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  #88  
Old 10-15-2013, 08:53 PM
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Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

In above post we compare the top thickness of sabots
.Here is comparison of the thickness of the sides of two types of
brass 12ga cases, the RMC turned case and the thinner
Magtech drawn case. Easy to see you can't size with same dies
and sometimes you have to use different wads..



In posts earler in the thread you saw variety of wad columns with
12ga sabots and here is picture of my favorite wads to go between
seal and sabot. The white felt ones from BPI. They compress down
evenly on firing, easy to load, decent price,



You've seen the work on our 585HE posted. Folks ask what case
I made first ones from and how. Here is a sketch showing the steps
I used to make the first 585HE from long basic straight Nyati brass.
The start of the belt step I put on the case where it is thick I do it
in my case spinner lathe I made. Then case is lubed and run into
couple swaging/sizing dies and comes out formed into our belted,
straight sided, 585HE case...... It is really faster getting a big
run of cases made in a factory.




Shot a 12ga sabot load w/440 gr Minie bullet in smoothbore Rossi
in 3" case, Going about 1700... .. 4" group 3 shots at 30 yds.
Gun works fine, shoots nice. Got extra weight in the butt.
The Minie I used is a semi-round nose. If I had the ones of same length
with blunt nose, slightly heavier the group size would be smaller as
they'd be more nose heavy, be like Foster slugs..Ed
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  #89  
Old 12-08-2013, 06:25 PM
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Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

Here is picture of the group improvement a guy had shooting our
sabots in a real tight barrel. Actually an undersize barrel compared
to Savage and Nef barrels. Had a wide open group with shotgun
powder but made it much smaller using much more
of the slower 4759.



There is a guy now in Canada with our sabots for guys there and
other countries, and as well, he can ship back to here. He plans
on supplying the .58cal slugs also for the sabots if guys can't get
them or don't cast their own.......
Contact is- jeff.a.white at gmail.com
If things work out for him he plans on getting a bunch
our 585 cases imported for sales there

I got some factory 8ga kiln loads, 3 oz lead at 1800 in the long
barrel falling block. Got box of 25 to see how they compared to
the loads we set up.Our favorite is 900gr at 2300. in plastic case.



Here is picture of section 585HE case showing 4 pyrodex 54cal,
60gr equivalent pellets, with a 440 gr Minie bullet.
Actual powder wt is about 185gr....Goes about 2600.
Nice cloud of smoke and really bellers out of the slow twist barrel
barrel we set up for minies.....Top pellet tapered a little and fit
inside the hollowbase of the bullet....Ed

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  #90  
Old 01-01-2014, 04:35 PM
Bronze Member
 
Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

Another use for 58cal Minie Bullets would be to setup a 24ga FH.
Minie bullets cheap to cast and buy. We use the .575-.577" in our
12ga sabot, and the .585-.587 in my 585HE. And you could use
577 NE bullets also.

For those in shotgun only areas there is a way. You can get 2.5"
Magtech brass cases, but also you can set up a 3" chamber and use
577NE 3" brass. Grafs shows some under 4 bucks each. Cheaper
than getting them made. And if you set up chamber with shotgun style
forcing cone you could shoot shorter Magtech as well as plastic cases.
Reason to use 577 cases, they are stronger solid head, last forever,
and can be run higher pressures and still last forever.
You can get barrels, 58cal at Green Mtn I think. .We got some also.

AND the first batch 585 barrels from McGowen has got here, more
will be built.They are the regular 1 to 20 twist barrels, and we have 14
that are profiled and polished, and 3 others that are straight blanks,
1 to 20 twist. And 6 slow twist barrel blanks for guys doing mainly
Minie bullet guns, and bunch smoothbore blanks...Pictures soon.

Here are couple pictures of a 585HE gun a guy is doing with nice
walnut stock. Gun has extra bedding lug and accra-glassed.
It is an Enfield and has single stack magazine.



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  #91  
Old 01-27-2014, 10:42 PM
Bronze Member
 
Join Date: Sep 2006
Posts: 99
Re: 12ga,10ga,8ga,4ga FH;585HE/700HE, other Big Bores--

Here is picture of 24ga FH in the Mossberg bolt gun. On a
Mossy 390 frame, .585" heavy barrel, same as 24ga size.
Chamber is set up 3" with shotgun style forcing cone,
so it can use 2.5" plastic cases and 2.5" Magtech brass
cases with slugs or shot and for 3" cases we use 577NE
3" brass. Really make a hairy 24ga using the 440gr to
540 gr Minie bullets at 21-2400. If you take 540 Minie bullet
mould and leave out base pin you'd have a 650gr that
would do. All these bullets and slugs as well as jacketed and
turned 577/585 bullets work in 24ga as well as my 585HE.
And the smaller Minies work in our 12ga sabots. I keep
saying 58cal is where it is at, and there are more bullet and
slug choices in the .585 size, easy to find, than any other
caliber over 458. And Minies are like 40 cents each and
cheaper if you cast your own.




Here is picture .585" barrels from McGowen, with other barrels.
Most of the McGowens profiled and some straight blanks.
Others we have are the slow twist and smooth blanks...
In back some of the cases and die sets.



Here is picture of an Enfield and a BBK in Hogue recoil
reducing stocks. These stocks are the rubber coated ones with
the easy to grip, nice pistol grip.Has McGowen 26 inch barrels,
1 to 20 twist, barrels are heavy profile and taper
to .980 inch at the muzzle. Guys are doing more on Enfields
and others through the winter. Ed

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