30-40 trapdoor

[bigted]

somebody mentioned at one time here in a thread talking about the chambering's to put on a trapdoor platform when doing a custom barrel/chamber job on a trapdoor. I cant find that thread and would like to research the change the gubbermint did when doing a tryout for the 30-40 round.

can someone chime in with this info or the poster ...[srry cant remember the poster either]... re-post the info mentioned and maybe the reference to these tests?

thanks all

[Tatume]

Hi Ted,

Is this the one you're seeking?

http://castboolits.gunloads.com/show...-40-Krag-Loads

Take care, Tom

[Tatume]

Here's another.

http://castboolits.gunloads.com/show...trapdoor-loads

[Tatume]

Here's some interesting reading, though maybe not exactly what you're after.

http://www.trapdoorspringfield.blogspot.com/

[13Echo]

Try this site:

http://trapdoorcollector.com/cal30.html

Jerry Liles

[bigted]

13 Echo ... yes that is close very interesting on the main subject.

Tatume ... no ... what im looking for is a post that refers to an actual Trapdoor rebarreled to the 30-40. it would be an interesting transformation I think.

[Frank46]

Not sure how true this is but dimly remember the Springfield Arsenal trying to make up trapdoors in 30-40 but the 40k pressures were too much for the trapdoor action. Then again I could be wrong. Frank

[StrawHat]

Several springfield single shot rifles were used to test barrel alloys for the 30-40 cartridge. They were rebarrelled many time each, to test the barrels. The actions held up to the cartridge.

I am not aware of a thread on this site specific to the OP's question.

[3leggedturtle]

I read an article about one that was converted to 38WCF. Didn't print it out, and now cant find it.

[bigted]

that would be an interesting conversion as well ... 38 WCF ... I have heard of 38-55's also ... sky would be the limit if a feller kept the chamber to be equal or lower pressure then the 30-40 I would guess.

[StrawHat]

Any cartridge based on the 45-70 basic case would also work well, 45-80, 38-56. 40-65, 33 WCF. Drop down to the 30-30 basic and you can include the 38-55, 32-40, 30 WCF, 25-35. Drop to the WCF cartridges, 44 WCF (44-40), 38 WCF (38-40), even the 45 long Colt. Once you get to the pistol cartridges, you are carrying a heavy rifle for a small cartridge, I have heard of a 22 Hornet in a Trapdoor, basically it was a target weight barrel fr the cartridge. I am aware of a current build that is in 22 LR. How small do you want to go?

[madsenshooter]

I can't find it now, but there was a museum in TX, perhaps one of the Army bases, had a trapdoor that was barreled for 30/40. I think I'd prefer a rolling block.

[bigted]

at least with a trapdoor [my opinion anyway] the block and shell would be deflected up a bit instead of straight back like with the roller. the 30-30 base cartridges sound fun with either the 32-40 or 38-55 being of the heap like for me ... however a 25-35 would be nice as well but ... then we are getting a lot o steel with its weight as is mentioned above ... 22 LR ... woww !!

[lbaize3]

If you want good information on the 30-40 Krag in the trapdoor go to https://www.youtube.com/watch?v=8F49D67pJEY