That is a very nice revolver Jorge. How do you like the balance of the new Colt King Cobra with the 3" barrel? I have a Colt Magnum Carry which is older but very similar and has a 2" barrel. For carry ammunition I recommend Remington 357 magnum Remington 125 grain Golden Sabre or 357 magnum Speer 135 grain Gold Dot Short Barrel. Both loads are medium velocity and will be very controllable out of your 3" King Cobra. Let us know how it shoots.