rosader:

The .44mag. case is around 1/8" longer than the Special, allowing a larger powder charge and thus is a higher velocity, higher pressure round. Revolvers chambered for the magnum will therefore have a longer cylinder. Maybe those who know more than me will provide further information on differences in the design of the gun to accommodate the higher pressures of the magnum cartridge.

Specials may be fired in magnum guns, BTW, since the case and bullet diameters are the same.

Hope that made sense, and helps a bit.

Andy



[Looks like Blackpowder and I were writing at the same time -he provides an excellent perspective.]