12GA FH Slug Tester --

[Scrounger]

Georgeld, it should be somewhere around 550 grains. Do you know the definition of "gauge" in shotgun parlance?

[hubel458]

Fired couple 3.5" cases with 90gr
4759 and 460 grains of buckshot,
14 number 1 buckshot.Fired in nef,
pattern huge due to rifling, even with
shotcup. They were going 2000 fps plus,
and went through 1/8 steel on end of
stand. Ignition perfect, extracted easy.
In smoothbore be a real hairy load.
With three 3.5" plastic cases with
100gr 4759, 600gr slug. Used .135 card wad,
a 1/2" and 1/4" felt wads. 1900+ fps
in 24" NEF barrel, same low pressure as
the 3" cases we pressure tested. I have NEF
chamber lengthened for our longer
brass case. A nice long barrel we'd
have 2050 plus.Ed

[hubel458]

Here is pictures of the breech, lever,
linkage, etc, set up on a block to
get the geometry for the scaleup model working
ok.And setup measurements to make the breech
hole in the action, in right place.Also used
this model to get hammer and trigger set
up to ride on the breech block. With
a strong hammer and trigger in the right
place in the guard.In the pics above you see the pin the
lever pivots on. The actions being bigger
will be wider than the levers;So the space on the
pivot will be taken up by the Ruger
style extractor on the left side and a spacer
on the right side. Spacer also acts as a
breech block stop at the bottom of the
breech travel.So to get block stopped at
right position for the diameter of the case
and feed trough, we adjust spacer size.
Ruger extractors from GP changed
a little bit will do.Ed.

[hubel458]

Found info an a double that would work
for making 12GA FH. It's a Spanish 10 ga
on an 8 ga frame that we think Stoeger and
maybe others imported years ago. It says
No. 6 HG on trigger guard. It is over 2 & 3/4"
across outside of both barrels, chopperlump
barrel pivots, with heavy locking lugs,
and A purdey style third fastener.Top lever.
Barrels are big enough to use as monoblocks
to screw in heavy 12ga barrels, with same size
threads as my Savage and it being a huge action
could handle same loads as the Savage.Like
12-17,000 ft lbs. Ed.

[45nut]

What a wicked thread. I am quite satisfied with my 500A2 at the moment but .....I have an older single 12ga bare action just waiting for a new lease on life.

This will wait of course, dealing with workers comp for a back injury has me down and out.
When the idiots currently employed as my doctors actually do something beyond writing more 'scripts and actually want to treat the problem instead of masking the symptoms has me baffled and disgusted.

[hubel458]

Here is sectioned action with parts in.
Original action that had defects
that I sectioned down the middle..I
ground out the top to allow case
to set higher, representing a
the taller action that we will
have due to larger diameter cases.
That lever in the picture is the
lever we will use with longer stroke.
Also in the action layout is the
breechblock, hammer, trigger with a
12GA FH in front, all in to check layout.
This lever looks to be easier to fit
and shape to bigger action and stock,
with a good pistolgrip to handle recoil.
Lever shape fits where trigger is better.Ed

[hubel458]

870 double pump big bore. 20 shots.
Hard cast 600 gr slugs, 4759 loads
in plastic, be real neat. Fires both
or one at a time. In classifieds on THR.Ed

[hubel458]

I will be posting more research on this thread
about other powders in 12ga plastic cases,about the
12GA FH loads, about scaled up falling blocks, my 700HE long
belted case, and the 28GA FH, on the right.
And regular case will fire in same chamber. Ed

[hubel458]

For you big bore collectors.Here is
a gun that make good buckshot
deer gun. Use big buckshot.If
your into collecting cases - Maybe
get some for collections as the guys
who ordered them, didn't take them all.
There is a whole bunch of the Tula 4bore
cases at Rocky Mtn Cartridge Co.
This was the run we had made for the
Tula 4bore pumpgun. It's a 3inch 4bore
case. 20 bucks single case, shipping and all.
The price of brass and machining is twice that.
Here is pic of the gun it went into.Ed

[hubel458]

Here is pic of the finished breech block model
for the scaleup action.You can see hammer
and trigger mounted in the rear of the
block.Ed

[hubel458]

Another experiment in shotgun/rifle realm is
28GA From Hell. 28ga is .550 bore and with 550Mag
barrels & bullets being made it is a natural. Have one
on bolt gun ready to chamber.Chamber still
will fire shorter cases..Ed

[hubel458]

Rocky MTN is making me some
3.25 in 28ga cases. They are good to 38k psi.
That will get 550 gr out at 2500 in
bolt action.A regular 28ga gun may get to
2000, depending on how heavy barrel is.
Get a NEF Ultra cut off leaving breech section
for monoblock and have 28ga rifled barrel
made and screwed or soldered in monoblock.
And being able to hold 38k to match brass,
That would get 2500 fps loads.Good test
for some 500-550gr 28ga/550cal hard slugs.Ed

[BAGTIC]

Are the primer pocket bushings a do-it-yourself project or can they be bought?

[hubel458]

To bush bmg pockets down to large rifle or shotgun primers
it's a doit yourself, as I haven't found any ready made
to screw in. Ed

[lar45]

I drilled out the BMG primer pockets and then soldered in a bushing for 209 primers. I'm wondering how much the soldering has softened the brass. Then I had a thought about low temp soldering. I have some 225 F chamber cast alloy. Could this be used to solder a rim on and the primer bushing in without annealing the case?

[hubel458]

It is easier to ream out pocket a little and tap and screw in a 3/8" x 24 brass rod. Then face off, then drill about
.080 flashhole and the drill and ream for smaller primers.
I don't like heating the head at all. And to heat head for putting on rim would soften it to much.If you can make rim on
small lathe or CNC machine it can be threaded easy also,
and just turn off rim from case, thread it 5/8 x 24, screw it
on with locktite. I'm hoping one of the guys doing this will be in setup to make rims in volumne to sell to others.Then others can
do cases which isn't as hard, and put on rims.Ed

[hubel458]

Here is picture of the first falling block
model of aluminum, with a roughed out
stock to see how it looks. Action is a
rough model. It shoulders nice, and
lever is inlet into pistol grip,
so you can't get banged up
fingers with the big cartridges it is designed
for, like levers that stick down at the
guard.This action will work for all the
big bore cast bullet cartridges.Ed

[hubel458]

The action will have recess in the back on top for any
length tang needed. The lever also is easily straightened for
old style straight grip stock. Ed.

[hubel458]

Here is pic of action model with lever open
and the breech block down. Also the action
will have a slot in the rtop rear for a
top tang of whatever length you need.Ed

[Buckshot]

.............Quite a project! I had noticed a large upswing in dinosauer incursions recently into the neighborhood and my 375-06 just seems a bit light. I should take a close look at these things you're doing

..............Buckshot