Thanks for your input. I will get some snap caps when the budget allows. I read on a different site that one could use spent casings, with the admonition to paint them with fingernail polish as a safety precaution against accidentally mistaking live ammo for dead.
When I took it out in the backyard and put 6 38sp and 6 357mag through it , I was very impressed with how it handled the 357 with ease. After all the talk about the scary kick I had a death grip on it. Not necessary. I will say that I need to practice to get the accuracy down with the DA...
Strange note, Montkun...I went to four stores today looking for snap-caps and nobody has them. It seems like I used to see them everywhere. Anyway, a local smith said to sand off the end of the used bullet case because he thought maybe the dented primer could be the cause of the hangups. Oh, and another local guy sold me some plastic casings with rubber bullets and primers. No powder. That sounds like a fun way to practice and sort of dry fire.
After 3 mos. and a couple hundred rounds I really am happy with this gun. I did get some snap-caps last week at Jay's in Clare, MI, and the DA is loosening up a bit, or else my trigger finger is getting more muscles I stopped to see an old friend who I remembered had some sort of revolver that he inherited from his Dad, to find that it's a S&W 19, 4", which is the same as the Rossi 971. Fun!