I have a model 13-3 nickel plated revolver that has less than 200 rounds through it. I received it from an estate where it sat new in the box for years and years. When I got it, I oiled it up good and took it out to shoot it- worked good with .38 special, but when shooting .357 the trigger would stay stuck back and I would have to manually move it forward. It would also not operate in single action from time to time (the hammer wouldn't lock back). It now does it with .38 loads too. Without ammo in the cylinder, I cannot replicate the problem, however, with spent shells in the cylinder, the problem exists. What should I be looking for?
Thanks in advance!