Best left to a gunsmith
Try Browning at the link below
Barrel.
the barrol
42 gallons
50-200
10-1000 USD depending on specifics
Impossible to answer without knowing if it left the factory that way.
marlin 1870-micro-groove barrol-model 444 is it a 1-20 or a 1-38 grove & whst is it worth ?
What is your question? Yes, the Model 36 comes with a 2" barrel and holds 5 shots.
Turn them fully in and then 1 1/2 turn out. This will allow you to start the engine and fine tune them from there.
You will need a timing light with the timing advance option so you can adjust and monitor your changes. Vacuum advance limiters along with mechanical advance timing weights and spring kits are available from after market suppliers.
I suspect it is nickel or chrome plated since S&W never made a stainless revolver in that caliber. Would need to know all of the markings on your gun to answer the question.