I'm a believer in 147gr slow poke for SD in my other 3" barrel pistols, Fed HST standard pressure.
What works reliably in your RAMI?
I didn't run 147gr loads in my first session with my new Rami. I had 4 FTF nose dives using WIN NATO -- the best grouping load for my full size CZ. No prob with 115gr Rem FMJ or Blazer Brass 124.