I actually load Longshot for 9x19 Major, but with a 125grs bullet.
I load about 7,5grs with Small Pistol Std. and a COL 29,6mm.
This is for my STI Trubor and makes easily Major.
The hodgdon database says 3,8-4,7grs (min/max) for 147grs bullet and a COL of 1,1".
Benjamin