You need to find a gunsmith.
Best left to a gunsmith.
read the instructions
Contact the manufacturer
Read the instructions......
Take it apart, clean it, lubricate it and put it back together.
eat dick
DNA provides instructions for RNA polymerase
Follow the instructions on Youtube.
A 41 magnum caliber revolver will shoot 410 gauge shotgun shells but is not recommended. The shot will lead the barrel rifling. There are also adaptors you can put in a shotgun that allow you to fire pistol/rifle ammunition.
You should ask a gunsmith for help.
DNA provides instructions for RNA polymerase
Put it together read instructions.