.410 to .444 "light"?

I was lying in bed a few minutes ago and had an epiphiny:

What is a .444? well, it seems to be a high-pressure .410 with a shorter throat, heavier barrel and rifled bore - with the rifling adding .015 or so to the bore.

Hmmm.

So I ran downstairs and grabbed my McPhereson MCR 3rd Ed.

Ah HA! The .444 holds 51gr water with a 240gr bullet, but runs to thr 44,000cup range - BUT - on the next page the Trapdoor Springfield loads run between 9000 & 15,000 CUP at roughly 67gr water.

Hmmmmmmm.....

Can anyone tell me why using powders rated for .45-70 trapdoor in a .444 case or full brass .410 hull would hurt the 9410? It is a Win 94 action after all...

The barrel/breech thickness of the 9410 has got to be 2x - 3x that of my 12ga - so I really don't see how the "normal" .410 SAAMI specs apply. :confused:

Heck, it would almost seem possible to rifle the barrel up to .425 so you could make it into a ".444 Light" and use regular .444 components.

Hmmmmm.....:twisted:

G'day & welcome to the site !

Strangely enough the powder I use in my 45-70 is the same as I load for my .410 & a mate uses it in his 444 (only cause he won't listen to reason & use the .444 as a Tomato stake & buy a 45-70 !Oh the crosses we have to bare :coffee: ) The 45-70 & the other thing (.444) work well with fast burning powders as due to the size of the case vs Bore they only need about 2inches to burn all of the powder to obtain max pressure in the barrel ! The .410 is basicly the same princeable ! The .410 is far more comftable chambered in a 45 cal barrel . I remember T/C used to offer a 45/.410 combo barrel

Dave