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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 25 Jan 2012, 23:26 
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Joined: 26 Nov 2011, 17:52
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Some more sabot and slug ideas, discarding types
and locked on base types.

First picture of 20ga Buckhamer pulled apart. The bunch
I have were pulled apart, the slug won't lock back in
tight, into the base.

Image

Second is various 20ga sabot/slug ideas some using
buckhammer sabot bases that a bunch of 458 cal lead
slugs and jackted slugs I have, lock into real tight.
The 458 lead ones are 400gr, jkt are 350gr.

And I got some empty SPW 20 gauge sabots, and 20ga
Buckhammer slugs lock into them real tight.I have
many of these slugs. These slugs are 440gr.

Also is 3" 20ga FED factory sabot shell and one of
discarding sabots out of the case. Also a 3.5" 20ga
Hastings 3.5" load with black locked on base sabot,
and sabots out of the case and couple 20 brass
3.5" RMC cases.

Image

Next is variety of 12ga sabots with 50cal slugs
in them.2 white and the pink sabot are FED, The black
is Hornady, With a 50cal long bullet .
The grey, is a BPI with .504" cast 440gr slug.
I wish the BPI was full size like the others
and fit rifled barrels tight for accuracy.........

Image

Last 12ga SPWs from Slug-R-US(30 cents ea) with various
50 cal slugs locked in tight, and shown with one out of
a factory load, the dark colored one. 50cal 385gr
Great Plains ML slugs lock in perfect for a lighter
loading. Other ML slugs will do and a few of
the Dixie Gunworks 50cal slugs lock in also...Ed


Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 26 Jan 2012, 06:55 
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h585, These SPWs from Slug-R-US type sabots have best accuracy from rifles shotgun bbls?

UNGH.

ETA, Sorry, fast type; should read "rifled shotgun bbls".

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Last edited by Username Goes Here on 04 Feb 2012, 08:48, edited 1 time in total.

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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 03 Feb 2012, 23:37 
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Posts: 80
Yes some guys say they are as accurate as the best out there.

Some more slug setups and ideas.

First is USS brand sabot that European cartridge has, without
locked base, a discarding 12ga sabot, with .629" brass slug.
It is as accurate in rifled barrel as its locked on base
counterpart, in smooth barrels. Up to 750 gr brass slug
I tested. 3 shots in an inch, 30yds.
Shown with BPI powder cup seals.

Image



2nd is the USS slugs with locked on base for comparison.
With corresponding length cases they were designed for.

Image



3rd are heavy solid tungsten slugs, the smaller .580" cal and
1200gr, the bigger ones .660" cal and 2200 gr.
A guy in Southern MI made a few for me to check out. Now these
too hard to fire fullbore, damage rifling, must be in plastic.
These are just what the super heavy slug guys might like.

Image



4th is a 1000gr 58cal tungsten slug in a 12ga REM style
58cal sabot. Notice how short it is for being super heavy.

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 13 Feb 2012, 03:27 
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Joined: 26 Nov 2011, 17:52
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Here is some more older cartridges and ideas.
First is a fellows collection of older brass cases.
They look like Berdan primed. Run from
36ga to 12ga, big one on right is flare cartridge.

Image

Second is a paper case clad with
thin brass nearly to the top.

Image

Third is picture of paper case crimped into
the side of a slug with shallow grooves.I did one
pictured above with a Dixie slug.

Image

Some experimenting with 12ga discarding style sabot idea
that takes 58cal slugs/bullets.I pictured them above.
A fullbore,bore fitting sabot that takes 575-580 cal
slugs or bullets, cast or jacketed.

For reloaders to use, and not undersize ones
that have been available, for reloading guys. That
the guys haven't been able to get speed and accuracy
at the same time. These sabots are super accurate in
most tests, in factory Remington sabot loads. Much
more so than the undersize sabots reloaders have
had to work with.

I tested with the 440 gr .575cal hollowbase
Dixie Gunworks # BA-1103 lead slug and 3 shots from
heavy long barrel NEF nearly into same hole, at
30yds. Gun locked down. Going about 2200.
Our slow powder loads in 3.5" plastic.
Can be loaded faster.

No tests at long range, bad eyes/no scope, colder
than witches ---, and no time.
I am trying to find who makes these.There are
about 2000 injection mold companies in US.Ed

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 22 Feb 2012, 05:48 
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Posts: 80
Another 12ga sabot idea, first picture is a 570 gr USS slug,
with Powder Cup seal from BPI, locked to USS discarding sabot
section. This shortens column so that we can get more of the
slower powders in we use, in shorter 2.75" cases. With slower
powders, they get to peak pressure a little easier
so that the cushion usually between seal and sabot/slugs
isn't needed. This locked on seal will aid in smoothbore
accuracy and it will work of course in rifled barrels.
This sabot has a peg on the back that locks it in original
setup to the green USS cushion base/seal, and we just pried
it apart and drilled tight hole to match in the Powder Cup
seal, and forced it on for a locked fit..
Slug is .629" diameter.

Image

Next picture is 3 sizes of first USS sabot slugs, with
the locked on bases which work good with them. Giving
nearly rifle accurracy in smooth bores.

Image

Here is older picture of couple of Rodda 4 bores.
Man what nice old guns.

Image

Next picture is a 1.5" Minie ball slug, might work for
close to a one gauge. It is next to older 37mm case which
might fire it also. Maybe a way to make a one gauge of
sorts, if.......I get enough ambition...Ed

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 25 Feb 2012, 06:19 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Some more 12ga sabot work. The sabots in first picture are
like ones we want to get made for reloading.
They have 440gr Dixie Gunworks muzzleloading minie slug.
I related earlier that 3 shots with these in heavy rifled
barrel NEF got them all in nearly the same hole, at 30 yds.
Also 4 shots same distance, a 3 inch best group, smooth barrel.
The slight hollow base helps with smooth barrel. The hollow
base isn't as deep say as a 12ga foster slug.Another one they
have, a little heavier, with little deeper hollow base should
make tighter group. Loads in 3.5" plastic going about 2200.

Image

Second picture shows something new I found out.It shows two
different wad setups. When I took the REM Accutip loads apart
I notice they used a thick seal, old style white felt cushion.
All the tests I read about that factory load, says it is always
near the top in accuracy. I had used the BPGS and flexseal
cushion mostly, as it seals real good. But in the smoothbore
test above the thick seal and felt wad gave the 3" group and
the other wad setup 5". The smoothbore, which isn't a perfect
system, for slugs not designed for smooth, worked out to show
and magnify difference between the two wad setups..

What first clued me in on this, to make a check, was recent
weeks research on net,on all sabot patents, where I read that
sometimes plastic cushions cock a little affecting accuracy.
That is the plastic cushions with a lot of space in them.
Where the felt/fiber cushions stay much more stable for a bigger
percentage of shots.The very accurate Hornady SST sabot has no
cushion at all between seal and sabot, but a thin rubber cushion
disc inside their sabot, and the above may be one reason.
The Federal Fusion sabots and the Federal Expander sabot
both are accurate--they don't have a wide open plastic cushion.

Image

Third picture is of a Greener Martini slug gun a guy rigged up
with a heavy rifled bull barrel in 12ga. Great looking gun.

Image

Finally thoughts about all of our posts on many forums(110)
around the net. We are very happy with the response and help
we get doing this. We feel this thread a positive boon and help
to shooters interested in big bores, and by venturing into
the big bore areas will promote more guys getting into shooting,
reloading, smithing, etc. And a measure of interest are the views.
All sites including a big picture site, have about 9 million views.
And also we congratulate the 24hr Campfire Big Bore as being
being the first with our regular 12ga FH thread to go
over 200,000 views.Next is the Highroad with nearly 150,000,
third is the Firingline with nearly 125,000, 4th Accurate
Reloading 112,000, and 5th WeaponsForum 106,000.ED


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 25 Feb 2012, 18:15 
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Joined: 30 Jul 2007, 15:53
Posts: 2039
Location: Burpleson AFB
hubel585 wrote:
We are very happy with the response and help
we get doing this. We feel this thread a positive boon and help
to shooters interested in big bores, and by venturing into
the big bore areas will promote more guys getting into shooting,
reloading, smithing, etc.


Thanks for the efforts, pics and posting! I have been following your work w/high interest. There has been a lot covered here that I had no idea of and your info has opened my perspectives.

UNGH

_________________
markm wrote:
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administrator wrote:
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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 10 Mar 2012, 01:50 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Some possibilities with the 12ga sabots we have been
looking at. We may have possible leads on companies that
can make sabots, that have most of equipment to do so.
If they work out ok, the startup cost isn't as
high as others who have to set up complete machines.
We are working to line up a dealer who will get good ones
made, at one of these sabot making companies.WE hope to
have similiar design as the ones pictured below
but with slightly thicker base. I've sent these sabots
with Dixie cast slugs to different companies to show
what is needed, and what the full size specs should be.
With Dixie cast in they are similiar to Federal
Fusion sabots with lead slugs, only our slugs are 58cal.
We will keep you informed on what happens. At least 5
58cal slugs that Dixie has, looks maybe to work in these,
as best I can tell. And there are a few molds for
58cal cast slugs, by different companies.
The possibilities are, to reload with decent price slugs
and simple inexpensive sabot like these, for buck a round.
40-60 cent slug, 15-20 cent sabot, powder/primer 30 cents.

Image

Those sabots I pictured above we been testing, had 385gr
Remington plastic nose bullets. I used some in my
585HE and I get them to 3900 fps. Just to see how
fast was possible in the 585. If I shot them in
my biggest 585, the 585 HSM, they'd go about 4500 or so.
They are real light compared to 750gr 585 cal bullets.
Like a varmint round. Do up a coyote fine.All skinned.

Image

Some neat guns-First is a 20ga smooth bore Beretta style
break action 20ga. This is one of the greatest style
break actions there is. Beretta made their trap guns on
actions like this and great value for no more
than they cost. This one only 100 bucks.
We lengthened chamber to 3.5" so it can
use various 20ga smoothbore slug loads that we are
working on and testing..The SPW, Hastings, Lightfield
type 20ga slugs have decent 50yd accuracy in heavier
smooth barrels.

Image

Next is couple of older guns I found pictures of,
a 4bore Hughes and a 600NE Wilke. I like them.
2nd is special 20ga double that poster Nitro 450 Express
on the NitroExpress forum had built. Great job
on nice looking slug gun.Ed


Image

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 25 Mar 2012, 02:57 
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Posts: 80
The sabots we are working with, take at least 15 different
58cal cast slugs for good fit, with the OD measurement of
sabot at .733" with all of them in. There are 5 Dixie
Gunworks MZ slugs, 6 slugs from Lyman moulds I know of.
Five slugs from Lee moulds.These are mainly muzzleloading
slugs and can be cast varying hardnesses.

Examples-58cal (.575"- .578")
Lee molds for 500gr, 460 gr, 350gr, etc, slugs
Dixie Gunworks slugs of 440gr, 375gr, 490gr, etc, weights.
Lyman 530gr, 510 gr, 460gr, 400gr, 315gr, etc.
And they are all good slugs at a saving especially
when folks cast their own.

I'm getting out info on these to see if any reloading
suppliers will try to get some made, so we will have a
quality, proper OD size sabot, to reload with.

Image

From the research on sabot patents and testing by various
of our readers, the sabots can't be undersize, or accuracy
at high speeds isn't possible. I get questions about how
to reload them for accurate fast loads in plastic cases
for regular hunting and target use. Have to tell them we need
to have proper OD size sabot.. Most want sabot loads and not
fullbore cast....Why; they want lighter for less recoil in
regular weight guns, they figure smaller slugs cheaper,
they won't have leading with sabots if using cast, don't
have to lube and don't need gas checks if cast, cast slugs
for sabot use cheaper than jacketed. These parameters cover
a lot of shotgun only deer hunters trying to afford doing
their own loads, trying to be as accurate as expensive
factory sabot stuff and hoping the savings will allow much
more shooting.In the 1st is 440gr 58cal Dixie, and second,
one I like better a 510gr from Lyman mould. Third slug from
a Lee 460gr 58cal mould. 4th is various 58cal slug ideas.
Behind are Lyman and Lee 58cal molds. Got more coming of
different 58cal weights, clear down to 315gr. My casting
friend will get them and as soon a we get somebody making
the sabot, he can aid the cause by making slugs.
Some of the Lyman and Lee slugs are more streamlined than
modst big bore rifle bullets as you can see in picture.

Image

Here is picture of a nice Armi San Marco 20ga break action
we found, that we're testing loads in. I really like
the style of this gun. I'm going to have extra barrel setup,
an extra heavy 585cal barrel and put my long 585HE in it,
to go along the other 585HE single shots 585HEs we have
setup on NEFs, and CBCs.

Image

Here is a picture of nice Greener Martini 12ga, with new stock,
and a heavy rifled bull barrel, a fellow redid.
Such great work. And very accurate. All these guns need like
all singleshots, including break actions, are heavy barrels
and they shoot great and are easy to shoot with the
extra weight.

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 06 Apr 2012, 00:22 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Here are a couple high speed, stop frame photos, showing how well
and even these sabots we want to get made, open up.
The petals being thinner with 58 cal bullets or slugs, opens easy.
The slots between petals, going into the base aids even opening.
We know a couple retailers that are interested in selling these
style of sabots, if they round up the money to get the
aquipment setup. Shooting supply companies are down some
due the economy.

Image

Image

Third is the 585 HE project, using a Savage 110-112 bolt action.
Shown with barrel threaded and screwing action on.
And the action is long enough to make a single stack mag, if we
want, that would feed, with a little work, our 585 HE long case.

Image

4th & 5th; pictures are of a old time 20 gauge, double slug and shot
gun that was priced little less than the big name English ones.
It is a Husqvarna double. Nice gun, we'd really have fun with modern
20ga slug shooting using this ..Ed

Image

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 18 Apr 2012, 17:07 
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Posts: 80
Some info we have found out about the operation of discarding sabots.
In first picture you see thin white line between the strong powder
and the sabot. It is the white fiber cushion wad pressed flat. It is
shown on the left in second picture. In the picture of it compressed
you see it is pushing squarely on the sabot. This is most important
wheh the sabot and slug exit barrel to get the slug started as
straight as possible for accuracy.

Other types of plastic cushions aid in sealing and help get best
velocities but the rolls and legs in them can allow them to side shift
which can affect how straight the sabot is on exit, thus causing the
slug to deviate. The gray sabots we tried had cushion on the bottom
of them and inspecting them after firing you could see they were pushed
sideway some of the time. That is why we are trying to get tight
fitting simple sabots built and recommend using heavy plastic seals
with fiber wads to have least deviation and best accuracy.

Image


Image


Third picture is our steel block we are using for 2bore
with breach hole we got EDM'd into it.

Image

Fourth picture is an old time Kynoch rounds called the
"Lethal" and the "destructor".

Image


5th picture is a H&H underlever double 8bore.I think it is rifled
barrels.....Nice beautiful old gun.Ed

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 05 May 2012, 23:52 
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Joined: 26 Nov 2011, 17:52
Posts: 80
I think we found good overall sabot design that will
be the easiest to get made, easiest to get seals
and whatever wads needed... Keeping design simple.
It is same simple design as the ones pictured above
but with slightly thicker base.It is fairly compact
for more room for our slow powder loads, and when
using slower powders, we don't need as much cushioning
which makes the room for the powder. Larger charges
of slower powder, better velocity with less case
expansion, and more reloads possible.

We hadn't tested soft lead 58cal slugs in 12ga sabots
for penetration until now.. They did very well,
two different 440 gr ones, going though 4 inch dried
timber, pushing out some wood on the back.
Shows they are just starting to expand.Should do great
for deer and hogs. Going 2200 in long barrel NEF.
Have pictures later. A 58cal slug at good speed is
nothing to look down on. Many African hunters liked
that caliber in their 577 doubles for big game.
Slugs can be loaded faster, cast heavier,
and cast harder for any need.And compared to other
way of getting slugs out of a shotgun, once
we have good fullbore sabots, we save on needing
bullet lube, gas checks, cheaper to get, no barrel
leading, much better BC in the same weight of slugs
compared to short fullbore ones....


Here are pictures of molds that can make cast
58cal slugs for the 12ga sabot we are working
on.There are many makers and brands and styles
of molds and weights available.

Image

Image


Here is picture of a 10ga wadcup with a 730gr hollowbase
lead slug in on the left .In my heavy barrel 10ga smoothbore
I got 6" group at 50 yds. If we made hollow in the base
bigger it would be more accurate in smooth barrel.
The slug is .69cal one,measures .686"(from Lymam mold
like in picture), that Dixie Gunworks has. I bumped up the
diameter about .015" --wadcup is BPI VP100.

Image


Here is picture of a nice 8ga double a fellow has.
Great looking gun..Ed

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 21 May 2012, 03:36 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Working more with 58cal lead slugs in 12ga sabot we want
to get built. We shot a few for checking penetration,
with 440gr slugs at 2200 plus fps. Shooting into popple.
In picture the 6x6 on the left penetrated by harder lead
alloy slug, with slug showing very little expansion on
exit from the 6x6, On the right, soft pure lead slug through
a 4x6 starting to show expansion on exit. These slugs can be
gotten or cast your own to about any hardess needed.
They can even be heat treated to be as hard as jacketed.
I have rounded up 9 different ones very easy, shown in
2nd picture and there are more. Ones in picture range
from 400gr to 530 gr. There are molds to make them
down to 350 gr and less.

Image

Image

Here is picture, on left of Accutip sabot we been taking out
of loaded rounds and testing 58cal lead slugs with,
and right a hard plastic sabot model, we are working on
to see how slugs fit and how it looks, and how
it compares to the Accutip and other sabots we have
here from WIN, REM, FED, Hornady.

Image

In picture is a really neat, very strong, 10ga Beretta style
gun we got. Its barrel is heavier at the muzzle than most
all 10 gauges we've seen except the NEF with bull barrel.
Made by Pedretti, has top lever to open, instead bottom
lever like Beretta or the Investarm 20ga we showed above.
Going to make into switch barrel for 10ga and monoblock one
in 585HE later. Have 2 barrels for it. Has nice big pad we put
on it and it is weighted to 12 lbs in 10ga..

Image

Now for some internal ballistics comparisons.There is formula
for figuring appoximate Average Barrel Pressure,

You take Muzzle Energy times 12......and divide it by

the BORE Area in sq in, times the length of the barrel in inches.

Examples- you have a 458 WIN, my 585HE and 12ga 3.5"--
all at 5000 Ft Lbs of energy which for 458 be standard load.
The 585HE in this mode would be burning close to charcoal.
The 12ga 3.5 would be 440gr slug in sabot at 2200 plus.

The 458 Ave Barrel Pressure is about 16,000 psi.
The 585HE Ave Barrel Pressure is about 8,000 psi.
The 3.5 12ga Ave Barrel Pressure about 5,200 psi.

The purpose of this-- To show the possibilites of big bores.
Ok you can't go much higher with 458WIN, about 80gr of powder

But 585HE you can get way over 10,000 ft lbs,with 180gr powder
it holds running at 458WIN Ave Barrel pressure.

AND 12ga and 3.5" brass case in Savage 210, slow powder loads,
heavy barrel, you can get over 10,000 ft lb. with 180gr powder
at much less than 458Win Ave Barrel Pressure.
Possibilities are really great fun. Ed


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 07 Jun 2012, 19:03 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Some 12ga sabot progress. Here is pic of our sabot model, two
in front, shown with Accutip sabot behind. They are all holding
58cal slugs, showing how tight they fit and conform
to the inside of the sabot petals. A decent fit is a help
for better accuracy. Hope they get built for us this summer.
We are working on it.

Image


Second picture is from a fellow who put 58cal cast slugs in a
thinwall 20ga shotcup and shot this at 50 yds. This with first
load he tried. Great accuracy for so many shots. This shows
great possibilities with 58cal slugs, and should even do better
in the 12ga sabot like the above we like. I've heard about BP
guys who got into 58cal that they get good accuracy.

Image


Here is picture of some the grey bls sabots showing the way
they have got bent and beat up, and shows what I and many
others have found; that plastic cushions can bend and twist
and shift, affecting the slug on leaving the barrel, affecting
the accuracy.

Image


On a future work, I'm doing a Greener Martini in my 585HE long
case, Here is picture of a parts action with a stock idea
I'm experimenting with. Might use this or regular pistol grip.

Image


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 Post subject: Re: 12ga,10ga,8ga,4ga FH; 585HE/700HE; Other Big Bores--
New postPosted: 24 Jun 2012, 22:47 
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Joined: 26 Nov 2011, 17:52
Posts: 80
Back after losing time to a lightning fried computer.

Test in 3.5" plastic using a few accutip 12ga sabots out of factory loads.
The 12ga accutip sabot, hard cast 440gr 58cal minie slug in
36" rifled NEF at 2200, and it went through 12 inches of wood like
butter. The hole out showed it was starting to expand a little.

Test of softer lead 500gr 58cal Minie with deeper hollowbase in accutip
in smooth cylinder bore barrel at 2000, and 3 shots in 3" at 30 yds.
This was a Lyman 575213 new style minie slug
More experimenting can make these work fair in smooth barrels.
For best accuracy use a blunt nose heavier 58cal 600gr slug with
deepest hollow in the base. The blunt nose would be more front end
heavy and a little more accurate from smooth bore..
Lee and Lyman have molds like that.Others selling slugs also.

I mentioned before about seals/wads must be stable and not crush
down off center, or it might affect accuracy. Here is picture of
the one piece seal and wad Federal uses in their sabot loads.
Notice it doesn't have a lot of space in the cushion part that would
allow it to tip or go off center.

Image

Here is picture of some 10ga work using expanded 69cal minie and
700cal bullets in 10ga wadcup. 69cal hollowbase fairly accurate to
50yds in heavy barrel smoothbore.

Image

Here is picture of the Savage 110 done in my 585HE. Hollow butt of the
stock is weighted, gun handles nice.Ed

Image


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