If you have a solid bench vise and some aluminum barrel blocks you can buy a MGW revolver wrench. The wrench is $109 and the inserts that are frame specific are 40.
Spin out barrel is easy enough if not pinned.
Compare length of threaded sections. If used it may be ok.
You’ll need the gun to time so the sights are TDC and may need to adjust that later for zeroing.
You’ll need to check the cylinder gap with feeler gages
You should ensure that your barrel and cylinder chambers are in line. There is a rod for that.
Assuming you don’t need to set a barrel shoulder back a home shop can do it. There are hand tools to cut barrel faces and forcing cones.
Fitting and timing a cylinder or a crane is a whole nother can of worms.
Just the wrench and insert is $150. Now figure a barrel cost. Then you have to hope a used barrel wasn’t cut more than your gun needs.
Lord I wish I had the boxes of smith parts and tools our retired department armored had. He was a king of Smith armored work. So good the trooper team shooters would sneak their pistols to him instead of their own guy. When he died of cancer I heard all that stuff got dumpstered.....grips, barrels hands, springs, sights, screws. The only thing he didn’t have as stock was the frames. All the department gear for revolvers was at his house and not wanted by the department after they switched to Glocks before he retired.