Hello Brian,
I've done a fair amount of barrel swapping on marlins (not a .357 yet) and to date it has been very simple.
To qualify that, I do have a machine shop and proper gunsmithing tools.
You are going to NEED a barrel vise and Action wrench. There is no way around that. You just cant hold it tight enough in a vise to get the barrel out without hurting something.
If you are swapping one standard round barrel for another of the same configuration, then your only concern is the barrel indexing up straight and headspace being correct. If you have to face the shoulder off the barrel to bring it up straight, you may also need to deepen the chamber to get headspacing where it should be.
If you are say... Swapping a round barrel for an Octagon... Then things get a bit more difficult.
The forend will need to be inletted for the octagon barrel and the forend cap machined to fit the barrel flats.
There are other issues that go along with that barrel swap. Magazine tube length, Barrel bands or forend hangers, etc.
I would love to find a .357 Marlin barrel to make a 357 Bain and Davis out of one of my .44 mag guns.
Anyone know where I can pick one up?
If I can be more help, please feel free to contact me via
www.skinnersights.comThanks Brian,
ANDY