I would recommend the S&W Model 22-4 Thunder Ranch Revolver- a semi-remake of the Army Model of 1950.
I say semi because the original didn't have a half lugged barrel and had a longer barrel.
This model is 45ACP/Auto Rim.All steel.The supplied grips aren't very comfortable so I put some Pachmayrs on.
For some bizarre reason Smith has also designated the remake of the 1917 Army Model the 22-4 also
.
I can't imagine why they didn't call it the 22-5 or something.