I'd be comfortable shooting any revolver dating back to about 1910, just to be certain the smokeless powder innovations of the time were in full effect. Even before that is ok to shoot, but must load accordingly. Other than that, if pre-war2 I would shoot standard loadings of the era it was made. Anything made post-war2 is good to go.

I also don't personally own any guns I would not shoot and use if needed.