M 92 Winchester rebarreling to (.30 x 33 mm kurz wildcat).- Because:
My barrel is useless.- A new barrel and ammo 44-40 and 32-20 is very dificult to buy, here ( Paraguay- Sud America).- Is more easy obtain a barrel 7.65 cal. in very good condition, or a new barrel .308 made in Argentina.- I want a rifle in .30 x 33 mm kurz (similar 7.92 german kurz).- I need a little more powerful cartridge.-
I decided cut bak the .308 chamber and leave in front a short chamber of aproximately 32 mm.- And accept this chamber as it is.- Them make the new tread, and lapping, copy the outline of the M 92 Winch. barrel.- Instal and working with patient searching the right chamber.- I have .308 reamers for it.- The dies is another extra work, but I can make then too, cuting back .308 dies.- Shoots several preforming prototipes cases, to fireform its.-
MI QUESTION:Is the old M 92 Winchester receiver no 511.982 of 1909 strong enough"?.- Is necessary change the two locking bolts? Load calculate?. Possible preassure?.- Ideal barrel lenght for this ammo?.-And first of all: " the opinion and suggestion of the experienced gunsmiths and loaders".- I am waiting yours...PITER

Hi and welcome to the forum.

First question, do you have an original Winchester 1892, as opposed to some of the later copies by Rossi, Browning, and the like?

Some of the originals were made before smokeless powder was commonly used and aren't nearly as strong as what you can buy today.

The modern replicas by Rossi, Browning, etc., are routinely chambered in .44 Mag which would be around 40,000CUP max chamber pressure. But I sure would not put a century-old Winchester to that pressure.

If it's a Winchester, someone can probably look up the date of manufacture by serial number.

OK - now, what can you do with it?

If you can get a .30 barrel blank, I'd be just tempted to chamber it in .32-20. The .32-30 normally uses bullets of 0.312" or so, as opposed to the usual 0.308" for .30 cal. That's a little tight, so you could either load the .32-20 with soft lead bullets and keep the loads down, or change the expander in your die set to use 0.308" bullets.

Another option would be the .32 H & R mag.

What cartridge was the gun chambered for? It will be an easier job if the new cartridge matches the old one for rim size. If the gun was a .44-40 or .38-40, then the closest rifle cartridge matching that for rim size would be the .30-40 Krag. The common .30-30 is a bit smaller, but might work. Necked-down .45 Colt cases could be used as well in that case.

Another thing, you will need round or flat nosed bullets for the tube magazine.

It sounds like an interesting project - keep us posted. Max cartridge length is probably going to be in the neighborhood of 1.6" or perhaps 1.7".