Neal, thanks for that site info. You are the man, when

it comes to finding goodies.I will get a 3 and 2 bore cases from them to check sizes. Next week will contact them.

I wonder if they make the brass, or who does it for them.

PWM--The 2 bore shotshell being a 3 bore in actual historical practice is interesting and follows what they did with the developement of 4 bore. COTW list as a 2 bore size, 1.325, so they must have measured a brass case the old timers setup for for ball or bullet, which is larger than shotshell.The 3 bore measurement still is to big I think to use 20 mm brass.On the 20 mm case I have, the

20mm case base is .005 smaller than what my book says a 3 bore barrel is.IE the 3bore barrel is bigger than the 20 mm base, so there is no way the case will work, unless taper out at a steep angle.Hope that explains it better.Ed.

You might get lucky with Dieter Horneber in Germany. If he can not make it then he might know the person who can.

He makes the best brass

http://www.huelsen-horneber.de/frame_engl.html

Cheers,

Andr�

Ed and i need help in finding 25mm and 37mm brass so he can make 1-bore and 2-bore cartridge.He help me get the Russian pump 4-bore off the ground, so let help locate some brass so he can get this project off the ground.There is a guy in England who claims he the one start the 1-bore and 2-bore.Please if you know to locate this brass.

this will be hard for the 25mm x 137 or 25mm x 184, have only seen steel cases and how will you deal with steel.I allways working on 2 bore brass and the only one is the 20x110 US navy. the cartridge dimensions in this double gun journal articel showing a case very similar to a 4 bore with CIP dimensions.I have waiting for a case like this when I read Greeners "the gun and its development " about 2 bore paper and 4 bore thin brass cases. have allways heard of your 25mm plan, have you ever seen a 25mm case, this monster is 10mm bigger on the base as we find it with the old 2 bore. the japanese 37x 112 case is of course a rare collector item today when you find it and not a cheap basic case, the case have 43mm on the base , the 25mm case have 38mm, only 5mm difference. Do you have the dimensions for the 1 bore, I am looking for this many years. there is a dark history from the 1,5" puntgun case over the 37mm signal flare case to todays 37mm 8,5" alluminium cases, once fired for 1,5$ each. this may the right and cheap basic case for your big gun.

BTW I have build a press and make cases for big al russian pump gun, dont understand you americans. have you realy believe the russians build a gun and have no cases for it, they are not stupid. the russian 4 bore pump gun is made for a short 25,4mm signal flare case. this case is very cheap, you cut it, rework the primer pocket( most of this flare cartridges have the old gevelot primer and not the 209 primer) and ready. the only good think is that I have now a RMC brass case for my collection. the 25,4mm signal flare case is around 1mm smaller in all dim. than a 4 bore shotgun / rifle case. thats the reason why Ed have no luck when he resize the 20mm vulcan brass.

pwm - home of hidden things
I dont believe that dieter horneber have the machine's for such a big case. you may better ask DIEHL or RHEINMETALL

Here are some pictures of a very nice new 4 bore double rifle
The rifle next to it is a .465 H&H by H&H
The Gentlemen in the picture built the rifle himself it took about 15 years






Cheers,

Andr�

Why would anyone want to do a thing like that

pwm--As best I could calculate, a true 2 bore is about 1.33 inches, and a true 1 bore is 1.67. If we can get a case
to hold a 1.3 in bullet, with a moderate taper we should be ok, and have a safe strong 2 bore.I have some cases coming to see what can be done.
Same with 1 bore at about 1.6 in.I think a moderate taper is the way to go if loading to low-medium pressures rather than nearly straight like the paper cases or the Tula.
Don't need cases hung up in chambers.Need a taper like
Express cases.And as for the Tula chamber and barrel,
it was to small diameter to shrink the 20 mm brass to without weakening the base and making the sides too thin..And Tula actiom wasn't big enough to put a bigger thicker barrel in, like Badger is
developing for us.And we had collectors with Gevelot
paper cases that were right diameter but too long and they didn't want to cut up a 30 dollar case, to make what cost
15 bucks in brass at RMC.
We could have Rocky Mtn make anything we want but the rising costs of brass and the huge brass rods needed to make 2 and 1 bore cases would make them about
40 and 80 bucks respectively.Maybe more.We will figure
out something.Ed.