I'm not real sure exactly what you're asking, Hammer. Can you rephrase it a little? You already have a 6" ported S&W . 44 mag, but want one with a shorter barrel and no porting? Is that it? Or do you want a different caliber, too, or instead?
Porting is nice in heavy calibers, but one thing to keep in mind with a carry gun is the odds of it being dark if you have to use it. The flash from a ported or compensated gun will blind you at night. With a . 44 Mag, and good aim ("good aim" with a . 44 mag is any hit at all since the muzzle energy alone will take the dude out!), one shot is all you need... unless there is more than one threat.