I am not aware of any one offering it presently, other than in some instances as 're-manufactured' ( re-Loaded) Ammunition, but I forget the name of the Company who was doing that...and I do not know for sure when they had done it or were doing it, so it may be long gone by now also.
It is very easy to re-Load one's self of course, and, if you plan to shoot much at all, that would be the best bet.
Re-Loading it one's self also allows the use of Semi-Wadcuters in Lead, and, or Lead Bullets or Hollow Points and so on, to suit various applications.
I gather ( but have not tried it myself ) that 9 mm Largo is so close, that it will function in Pistols intended for .38 ACP, though much of the 9mm Largo Ammunition available is old and may be Corrosive Primer type.
What is the Pistol?