Pac-Nor will make 12 ga from Hell barrels. It will take a order of five barrels( to cover the price of the button) for them to make Rifled 12 GA 30 inch CM steel barrel and they can also Chamber them for us!. I'll work out all the chamber dimensions and they can cut them on a CNC Lathe with a Carbide boring bar!. Price will be about $225/barrel. These will be 1.5 inch blanks that contour down to 1.2 inches at the Muzzel. Who's interested? Now that we've worked out how to put a Rim on the .50 BMG it's time to get dead serious.-Rob

Just curious, what twist rate are they looking at? and bore/groove diameter?

I acquired a pair of ER Shaw rifled shotgun barrel blanks a while ago for a paradox project, but found a better way to skin the cat. Now looking for a ten-bore shotgun with stuffed barrels, for a sleeving job!

When I get THIS double built, some hell will be raised among the local buffalo!

The Shaw tubes are only 25 inches long, but massive! ..and they've gone up, now $105 ea!

http://www.ershawbarrels.com/shotguns2.asp

you guys are sick!
woofer

I would be interested in a barrel "group buy" Do you think it could be built up as a single shot, maby a break open or dropping block action? Also was thinking of the NEF 10guage rifled setup as a starting point for a cheap lower pressure proof of concept. Possible? A double would be nice, but well out of my price range ;-)

The Shaw barrels would work for real low
regular plastic shotgun shell pressures, but to go to even 30-35000 psi, you absolutely
need more diameter and more barrel for big
loads of powder,Regular 12ga dimensioned barrels
would only be safe to 12-15000 psi.Shaw barrels on their site shows they are 1.225 in diameter,
with bore .719 and groove .729......That
diameter isn't big enough for higher pressures
in a 12 ga with a case base of .800.I think if
the right single can be found that is set up for
8 or 10 ga, and barrel cut off monoblock, then thread and screw the heavy barrel like Rob has
lined up, you could run 30-35000 psi.I am
looking and if I find one I will go in on a barrel.Be nice to have a pile of Mc Bros Actions,
but first one of them for me has to do my 700HE
wildcat.First gun I had was a Longtom 12 ga
single.Be nice to have a hairy version of it.Ed.

I have a 10ga double that looks pretty massive, chopper lumps and greener crossbolt, but I don't think it would do justice to the round.

Lar--With those Greener crossbolts it would be
better than most.And if there is enough do a mono
block with the big barrels you could do 30,000
psi.Should get a 1500 gr bullet to 1500 fps.Ed.

What are you guys doing now ? putting a rim on 50 bmg ?

Yes, we figured a way to thread a rim on that is safe and just as strong as BMG case, allowing high pressures if you want to load heavy.Will post pictures of mine when son gets back.
Rob made some also.His probably looks better.
I told Rob I will get a barrel in the deal, as I will find something to put it on in a single
break open action.
Had a thought, which is dangerous...Have seen aluminum reciever break open 12 ga.As long as wt is needed , why not buid a reciever and stock all from one pc of aircraft aluminum.Thumbhole style.
Won't have no problems with breaking stocks.Can
make reciever and a corresponding steel monoblock
large enough diameter to screw in big barrels.
Build monoblock with a top lock also included.
Use an oversize hardend steel pivot pin.
This would work for any large blaster.Make butt
of stock to take the biggest recoil pads.
Some extra thoughtss on doing this, with the intention of getting 30-35000 psi with regular thickness shot gun barrels.When you start pushing
1500 gr bullets you have to use a mor progressive
slower powder which means a lot longer higher pressure curve.Thin shotgun barrels like .92 OD
at muzzle for 12 ga will unglue.And you can't stay with Bullseye type fast powders for that heavy a bullet, as increasing charge would unglue
even a heavy barrel at breech, even in McBros
action.This cartridge with real good 1500gr
penetrating heavy bullets, will have to be loaded
with rifle type powders, thus needing big bore
rifle barrels, with enough steel in them for
safety.Like 1.4 in breech min and 1.2 in min muzzle.Got to have wt anyway.Ed.

As the dangerous game 'ball and shot' gun angle would appeal to me the most what would it take then to get a double smoothbore happening in 12ga from hell?Or even one barrel rifled/ one smooth.
Loads around 1500fps with 1500gn slug or a 3.5" 12ga shell from shoulder fired double.

Cheapest or easiest approach?

Karl.

You guys are like mad scientists, bloody love it . Beats looking at porn sites all day.

To what velocity will the 12 GA From Hell push the 1500 grainer? MAX load? And with the 2000 grainer?
The only bad thing with the 12 GA FH is that there is no expanding bullets for it. So it will just make the same wound as a 12 GA shot gun slug. But it will penetrate much deeper (If you are going to use it on buff)

Is it possible to shoot shot loads with the rifle?? what velocity and shot weight?

Thanks!
//OK

Just for the record, I mistakenly thought this thread was a SERIOUS discussion about making 12-bore double rifles! My mistake.

I naively assumed that a 12-bore double rifle would toss the Fosbery-style 750-grain projectile out at about 1400 fps max, a 700-grain hollow-point perhaps a little faster. I had also assumed that barrels with larger breech-diameter than 1.225" would not be needed, since they would then have to be turned down anyway to fit them SxS on a 10-bore action.

But hell, what do I know! 1500 to 2000-grainers at 1500 fps, at 35,000 psi. Yippee! Pass me another spliff!

What in the hell is a spliff?

Overkill-With a BMG bolt action 2000 gr should
get 18-2000 fps, 1500gr get 25-2700.The chamber
will be set up to use 3.5 in shotshells

Marrakai-We are trying to make shooting
interesting!If we hunt around I think we will
find big enough singles and doubles.Or make
them.And bolt actions of course.If a person wanted to shoot 500 to 800 gr
bullets at lower presures, they could take the
heavier built 3.5 in 12 ga and deepen chamber for
our brass design and go to loading.Brass should last forever.You would use slowest powder out there, to keep pressures around 15,000.Don't load
with airspace, but use 12 ga felt wads, using
fewer wads as you increased charge.Be an interesting load developement.Ed.

First of all 35KPSI loads in this thing with 2000 gr bullets should be trivial. About 330 grs of H50BMG will do that NO PROBLEM. Velocities of around 1500-2000 fps should be easy to obtain. With a Sabot you could probably hit WARP SPEED! The issue will be barrel diameter and an action big enough for it. That's the problem. I am deeply concerned about what would happen if somebody simply took a 10 ga NEF single Shot Shotgun cut off the 10 ga barrel and threaded the block for a 12 Ga From Hell barrel. It could undoubtably be made to fit, but would the action take it? I don't know!
The only really safe way I can think of for this is to use a McMillan .50BMG action with a special bolt adapted for the rimmed case and appropriate modifications to the extractor and barrel. This I know will work safely!-Rob

Oh! Since I have random p-testing, I don't mess with anything that may turn up positive.