12GA FH

[hubel458]

Got some testing done with 12GA FH we just finished, using
730 gr Dixie Terminator hard slugs..First the gun is 25 lb built on a Savage 210 action,
heavy barrel 31 in long.Stock is full of
lead shot and epoxy in the butt section..
We got 2700 fps top speed with TERMINATOR
lead slugs.No leading..All shooting done with one case to see how they hold up,over 2 dozen firings and no resizing needed on the bottom
2/3 of the case yet, only size the top 1/3 to
grip bullet..cases fall out of chamber, and I have a minimum 12 gauge chamber as it is tight fit to get regular 12ga shot shell in it.Cases are made from BMG brass that
we added rims to..John at Bridger made and put rims on.Still uses BMG primer.can also fire regular shotshells.

Loads done so far with 730 gr terminsator--

230 gr HBMG---1550 fps
280 ge HBMG---2000 fps---21k load

260 gr W860---2200 fps
300 gr W860---2400 fps---27k load

250 gr 7383---2560 fps---35k load..slight comp.

260 gr Magpro-2430 fps
300 gr Magpro-2700 fps---35k load-11,800 ft lbs.

As this crappy weather allows,
Will test 750 gr Bridger bullet; and
A Barnes 3/4 oz sabot(should get 4 grand).

Maybe we can find a way to get a thick walled reciever done to put the Savage bolt, bolt carrier, trigger etc on,with slightly larger
barrel thread..Then it would have safety margin for 50-55k loads.. The 3 lug bolt will hold if in thicker reciever...It is a real super smooth
operating action.

Rob on AR got his going also.It is built on a Borchardt falling block
action, He can run full pressures as action was for BMG case.He got
a 750 gr Bridger bullet to 3000 fps, 15000 ft lbs.Ed Hubel

 

[griz]

Am I reading that right, 300 grains of POWDER?

And I thought a one pound jug didn't last long when I loaded 30-06!

 

[Preacherman]

With powder consumption like that, I'm not sure whether this should be under "General Gun Discussions" or "Pyrotechnic Explosive Destructive Devices"!!!

 

[Third_Rail]

You sure do make interesting cartridges.

 

[hubel458]

The concept was Rob's idea, to have a 12ga withmore power than
700NE, with slugs, but yet be able to shoot shotshells.
With brass cases that last forever, and big primers.
It is just a long magnum 12ga in strong actions.Operates
as shotgun legaly so no problems with being considered DD.
Rob also has a 2000gr bore rider Bridger bullet that he
got 1500 fps with.Ed.

 

[hubel458]

Fired a few 3/4 oz Barnes sabots, got them out at
3900 fps.. Hollowpoint Barnes slug is 327 gr
and with plastic sabot, both weigh 370gr.Rob fired a
7/8 oz sabot from his gun that can go higher pressures,
at 42-4300. I'm still doing most shooting on the one case,
fired about 30 times and still haven't had to resize the
the base of the case.Ed.

 

[Fly320s]

Sheesh... good thing that gun weighs 25lbs.

Should I ask why you're doing it? Or should I just say good luck?

 

[hubel458]

Fly--I have a lot of fun experimenting and putting big
holes in targets.Bigboreitis is an easy bug to catch.Ed.