To do it, you are going to need a wrench of some sort to fit to the barrels (preferably non marring since you don't want to mess up the new one), a vise and some sort of insert to put into the frame in lieu of the cylinder so you don't torque it out of true while swapping the barrels. You'll also have to set the cylinder gap, cut the forcing cone and adjust for front sight alignment as necessary. The last one could mean 'setting back' the barrel almost another full turn depending on which way the front sight needs to go. Even with adjustable sights, you need to have the front and rear sights lined up close enough to do the fine adjustments on the rear to achieve the final zero.

Considering the level of complexity- not to mention the need to have the metallurgical analysis done to verify that the steels temper hasn't been damaged by the fire- I suggest that you either send it to a gunsmith that does DA wheel gun customization or back to Taurus.

 

I have to agree with stoneknives, not only the fire but having all cylinders fired.

 

I'd be leery of any weapon that went through a fire. The heating of the metal could have had changed the structure of the steel's alloy. Considering 357 pressure's you could be heading for a big ouch and a interesting new nickname. Get it checked by a good smith.

 

Sent it to Taurus. Who knows. Life time warranty.

 

In looking at the parts diagram in the manual, it sure looks like it just screws out. The question is, is it a right-hand or left-hand thread? If it's got a right-hand twist on the rifling I'm pretty sure it'll be a right hand twist on the threads. If it's already been in a fire, I don't see where you've got a lot to loose. I'd use a padded vice and padded jaw channel locks and try rocking it back and forth to get it loose. Might want to take a real close look around the frame too and make sure there isn't a pin hiding in there somewhere. I'd also measure the distance from the end of the cylinder to the end of the forcing cone, and make sure a new barrel fits to the same spec. Hopefully the fire didn't weaken the metal, and it will hold together when it's fired. Then again it might not be worth the risk - and BTW I'm not a gunsmith. Might have someone who is take a look at it.