The 92 is a typical saddle gun with chambers matching most revolver cartridges i.e., 357 mag. 44 mag. These operate at 35K CUP and 36K CUP. The Std 94 runs 30-30 WCF at 42K CUP, the 94 AE XTR (made approx. between 1982-2004 has fat reinforced rear receiver is rated at 52K CUP. Chambered in 7-30 Waters, 307 Win, 356 Win, 375 Win and 444 Marlin. These cartridges are typically loaded from 42K CUP-44K CUP. The 450 Marlin is loaded to 44K piezo and offered in the new 94s. The 454 Casull operates in the 60K+ psi range, now you can see why they are no longer offered by Rossi, Puma or any other 92 knock-off. They will destroy that action over time. The 94 will take a bit more pressure in my estimation, neither should be used to push the 454 Casull. The Casull works well on heavy reinforced revolvers like Ruger, Freedom Arms and the BFR.
