Is it above 14k psi ? Sure.
Is it appropriate for your gun ? That's s long discussion . The writings of Brian Pearce are probably the difinitive modern era explorations of suitable pressure levels for .45 Colt , and loads within the various pressure tiers .
One common rule of thumb that involves minimal leaps of intuition involves .45acp . To wit ; if a particular gun was offered from the factory with .45acp cylinder , there would be strong presumption that .45acp pressures would also be viable in the .45 Colt cylinder .
Using that train of thought, would 9grs be suitable ? Probably .
As beloved as Unique is for its versatility , Pearce shows some alternatives . Read Pearce for specifics , but certain powders can match your current velocity at lower pressure, Or higher velocities at current pressure .