Out of sheer curiousity, does anyone know it is possible to re-chamber a .45 Colt '94 to .454 Casull?

If it is possible, has it been done? How's the feeding? Did the guy live?

Out of sheer curiousity, does anyone know it is possible to re-chamber a .45 Colt '94 to .454 Casull?
If it is possible, has it been done? How's the feeding? Did the guy live?

Buck Elliot reported on tests performed on both the Winchester M-94 and the Marlin 336 reamed to .454. Both rifles failed quickly.
The rifles are plenty strong for the cartridges they were designed for.
My links to this thread on Leverguns no longer work and a search does not bring up the subject line.

The model 94 does not have the strength of the modlel 92 when it comes to shooting such heavy loads.

The model 92 has dual side locking bolts that hold the firing mechanism in place. This is one reason Rossi chose it over anything else for making a .454 rifle.

The model 94 is good upto about 35K, whereas a "mild" 454 load just starts at 35K. Some are well over 55K, which is well beyond what either the Marlin or Winchester later designs are capable of.

It is true the locking system on the Model 92 is stronger than the Model 94. The Model 94 was designed with a specific basic cartridge case in mind. A cartridge case with a base diameter of about .419" and a rim diameter of .506".
With a cartridge like the .454 and its base diameter of .4475" and a rim of .512" you have a lot area to work back against the beech bolt and single (angled) locking lug. The Model 94 bolt is considerably longer than the bolt of the Model 92 and has greater opportunity to flex.
We need to keep in mind when we discuss the "strength" of the Model 94 action that when reamed for the .30-30 Ackley Improved case the action easily handles loads generating pressures in excess of 50,000 CUP without difficulty.
Myron Rockett posted on the lever guns forum that his top eject Model 94 reamed for the wildcat predecessor of the .307 - his .444/.308 - was still going strong after nearly 30 years of use with high pressure loadings of this cartridge. The Model 94 is plenty strong enough for the cartridge cases it was intended to handle, and for a few it wasnt intended to handle. The action was not intended for the large diameter case with the rapid recoil impulse of the .454 and I believe it has been shown in tests the Model 94 locking system will fail after less than five rounds have been fired.