Geez, Chongo still worries about .44 slugs. Nobody uses .44 anymore unless it's a .44 magnum. A .45 (Long) Colt slug will do as much damage as a .44 magnum without the extra recoil -- just load a 325 grain bullet instead of 250 or 255 grain. Or just get with it an use a .454 Casull:

...[The .454] Casull round uses a small rifle primer rather than a pistol primer, because it develops extremely high chamber pressures of over 60,000 CUP (copper units of pressure) (410 MPa), and has a significantly stronger cup than a pistol primer. The .454 Casull is one of the most powerful handgun cartridges in production. It can deliver a 250 grain (16 g) bullet with a muzzle velocity of over 1,900 feet per second (580 m/s), developing more than 2,000 ft-lb (2.7 kJ) of energy, although energy levels from common .454 revolvers with 7–8 inch barrels are typically somewhat lower (1,600–1,700 ft·lbf).

Or Chongo could just come out of the closet.