What model 3" 44 Spl do you have, SA, Ruger, New Vaquero?
Shoot the gun two handed from a rest to know how the GUN will do first.
Then shoot it offhand to see how YOU can do. If they're vastly different, It's not the 3" barrel; you need to get used to holding and shooting the 3" barrelled gun.
I have the 3 3/4" Sheriff Model Ruger Vaquero. As Snake45 posted above, at 25 feet, it'll keep them all in that 10 ring or X ring.
When I do my part, they'll all be in the 10 ring at 25 yards as well. There's no accuracy problem with a 3" Ruger.