Well, here we go again.
FairPlay, it is obvious you have not done a lot of reading on the board. No problem, I understand that reading message boards can suck up a lot of time that most of us don't have.
Bottom Line: if your gun will not function with either Speer GDHP 115gr or Especially Winchester 115gr Silvertips then you have some avenues open to you:
Send it back to Rohrbaugh for tweaking
OR
Look for the thread in this same sub forum titled This is the Ammo that Works
OR/AND
If you get your R9 back from Rohrbaugh but still have some reliability issues, try the ammo listed in the above mentioned thread.
Don't give up! Clean it and lube it. Try another range session. A break in helps trememdosly in many cases.
Mike