12GA From Hell
10-25-2006, 07:17 PM
#83
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
Been testing IMR-4759. No ignition problems.
Ignition is instant with regular primers.
Don't need Blue Dot starter powder,
like we had to do with RE-7 and RE-15
for good reliable ignition.We did 4759 in
plastic cases first.600 gr slug. I got a
nice working roll crimper attachment
for drill press for crimping slugs.
That sure makes it easy, and perfect crimp.
In 2 & 3/4 plastic cases with loaded
length of about 2.35 inches got to 80gr.
That's max as you must leave room for
about 3/8 wads or cushion wad. Some cases
may only hold 75 grains max due to
the case construction.Powder is less dense
than RE-15. 1650 plus fps in 24 inch barrel.
In 3 inch cases, loaded length about 2.6
inches, got to 95 grs max, 1800 plus fps.
Some cases may only hold 90 gr due to
case construction. Cushion is
a half inch felt wad or equivalent.
Both lengths start down and go up
if pressures allow. 60 gr short case,70 long.
This powder being faster than RE-15 you must
have a little cushion in the way of felt wads
or plastic cushion wads.With slower RE-15
a card wad works ok as powder started slower.
The powder burning must build pressure
to open crimp without a to high pressure spike.
This bulky powder with reliable ignition
is a winner.Then we tested 3" Rocky Mtn brass
cases, Got max load of 105 gr, and 1900 plus
fps. In few weeks will get the 4759 and RE-15
loads pressure tested.Ed
Ignition is instant with regular primers.
Don't need Blue Dot starter powder,
like we had to do with RE-7 and RE-15
for good reliable ignition.We did 4759 in
plastic cases first.600 gr slug. I got a
nice working roll crimper attachment
for drill press for crimping slugs.
That sure makes it easy, and perfect crimp.
In 2 & 3/4 plastic cases with loaded
length of about 2.35 inches got to 80gr.
That's max as you must leave room for
about 3/8 wads or cushion wad. Some cases
may only hold 75 grains max due to
the case construction.Powder is less dense
than RE-15. 1650 plus fps in 24 inch barrel.
In 3 inch cases, loaded length about 2.6
inches, got to 95 grs max, 1800 plus fps.
Some cases may only hold 90 gr due to
case construction. Cushion is
a half inch felt wad or equivalent.
Both lengths start down and go up
if pressures allow. 60 gr short case,70 long.
This powder being faster than RE-15 you must
have a little cushion in the way of felt wads
or plastic cushion wads.With slower RE-15
a card wad works ok as powder started slower.
The powder burning must build pressure
to open crimp without a to high pressure spike.
This bulky powder with reliable ignition
is a winner.Then we tested 3" Rocky Mtn brass
cases, Got max load of 105 gr, and 1900 plus
fps. In few weeks will get the 4759 and RE-15
loads pressure tested.Ed
10-28-2006, 03:07 PM
#85
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
Now these loads are for only heavy barreled
steel action guns like the NEF Ultra 12,
or like my Savage with heavy barrel added.
I am getting heavy barrel on the 87 and
it will be long.There are some turn bolt
locking lug pumpguns that would work
with heavy barrels.There is a large
12ga Tula bolt action, but it's not imported.
This week if weather allows(no rain)
I will be firing first test loads of my
700HE long belted case.Ed.[/align]
steel action guns like the NEF Ultra 12,
or like my Savage with heavy barrel added.
I am getting heavy barrel on the 87 and
it will be long.There are some turn bolt
locking lug pumpguns that would work
with heavy barrels.There is a large
12ga Tula bolt action, but it's not imported.
This week if weather allows(no rain)
I will be firing first test loads of my
700HE long belted case.Ed.[/align]
10-31-2006, 08:32 PM
#86
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
I want to see this scaled up to take
700HE, 12ga FH, 700NE, 50bmg, Rob's 700, etc,
or even 4bore, 8bore,20mm, 900HE.Anyone else
interested jump in. Were going to give it
a try.We are going to make first scale up to
4bore size in a machine shop.Ed.
700HE, 12ga FH, 700NE, 50bmg, Rob's 700, etc,
or even 4bore, 8bore,20mm, 900HE.Anyone else
interested jump in. Were going to give it
a try.We are going to make first scale up to
4bore size in a machine shop.Ed.
11-02-2006, 07:28 PM
#87
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
Found an O/U that would handle the 4759 3"
loads. It is the Zoli Z-Sport. Expensive,
all alloy steel construction, tested to
about 100k. That's not a missprint.Their
site shows testing at the Italian proof house
of 8000 bar.That's 7-8 times regular shotgun
working loads.Pic of action below. It handling that extreme
pressure, means that other quality
O/U like Rugermay handle 4759 loads.Ed
loads. It is the Zoli Z-Sport. Expensive,
all alloy steel construction, tested to
about 100k. That's not a missprint.Their
site shows testing at the Italian proof house
of 8000 bar.That's 7-8 times regular shotgun
working loads.Pic of action below. It handling that extreme
pressure, means that other quality
O/U like Rugermay handle 4759 loads.Ed
11-04-2006, 09:43 AM
#88
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
I get questions about whether the IMR 4759
loads aren't to high pressure.Even for NEF.
Well in Nef the REM factory Buckhammer
slug load, expands the base of the case
more than my 90gr, 4759 load. And I get
more speed, in the same kind of
Rem case.And pressure testing will tell us
for sure what we have wrought..Ed.
loads aren't to high pressure.Even for NEF.
Well in Nef the REM factory Buckhammer
slug load, expands the base of the case
more than my 90gr, 4759 load. And I get
more speed, in the same kind of
Rem case.And pressure testing will tell us
for sure what we have wrought..Ed.
11-11-2006, 01:00 AM
#90
Fork Horn
Thread Starter
Join Date: Jan 2006
Location:
Posts: 483
RE: 12GA From Hell
am working on
scaling up falling block to handle
700NE, 600Ne. 12ga FH, etc.We wanted to go to bigger 4bore size copy of Wickcliffe
but the short hammer carried on the breech
is too light to fire big primers.and hammer spring can't be made heavier either.So I am
drawing one scaled up to 12ga and 700NE size.
If used with our 12ga FH case will have to have
primer bushing........
SO- today the boy and I set up a mill.
And we along with old machinist guy couple miles away will build a model scaled up with
basic action and breech block designed to work with lever,toggle link. 1.25" barrel thread.
And for the 4bore size falling block, the
HSFB, 1.5 barrel thread, 2' wide action we
will combine a little from Stevens 44 1/2,
Ruger #1, Win 85, Sharps highpower falling
block. The Wickcliff copies a lot in its breech
from the Stevens.We will use a big hammer in the
rear of action with heavy springs,
to fire big primers. Half cock safety.Those
we appropriated from other break actions and
along with trigger and a lever are on
the way from
Gun Parts.Ed.
scaling up falling block to handle
700NE, 600Ne. 12ga FH, etc.We wanted to go to bigger 4bore size copy of Wickcliffe
but the short hammer carried on the breech
is too light to fire big primers.and hammer spring can't be made heavier either.So I am
drawing one scaled up to 12ga and 700NE size.
If used with our 12ga FH case will have to have
primer bushing........
SO- today the boy and I set up a mill.
And we along with old machinist guy couple miles away will build a model scaled up with
basic action and breech block designed to work with lever,toggle link. 1.25" barrel thread.
And for the 4bore size falling block, the
HSFB, 1.5 barrel thread, 2' wide action we
will combine a little from Stevens 44 1/2,
Ruger #1, Win 85, Sharps highpower falling
block. The Wickcliff copies a lot in its breech
from the Stevens.We will use a big hammer in the
rear of action with heavy springs,
to fire big primers. Half cock safety.Those
we appropriated from other break actions and
along with trigger and a lever are on
the way from
Gun Parts.Ed.