The repetition of the "is the .44 enough?" thread got me to thinking, and I know I'm going to hear something about this.
I believe that, under some relatively common circumstances, the .44 magnum is plenty of cartridge for normal use in AK. That is to say that at 50 yards or less, common handgun range, using one of the hard cast wide meplat bullets of 265 to 310 grain weight, at safe maximum loadings, all other things being equal, the .44 magnum will work as well as the 454 Casull, or even the .460 S&W. No, you obviously won't get the maximum velocities and paper energy of the mentioned cartridges, but as far as actual terminal performance, there is less real difference then might be realized. The one place where a slightly larger diameter bullet of more weight might help would be with a large pissed off Brownie, but I am still not sure it would matter that much. Placing the shot properly with the relatively unrestricted conditions mentioned, and the outcome would be very much the same, as far as I deduced from my own experiences and the situations of others I personally know.
So, as many here who have the experience know, a medium to large caliber rifle, or shotgun with a heavy non-typical Foster slug, would be a more proper device and projectile to use.