One thing about loading a 124 or 125gr 9mm bullet, is that you need to know
the make and shape of the bullet to find the shortest and longest, safe OAL.

Hodgdon list the Hornady 125 HAP at a OAL of 1.069" for its data.
I have found that 1.075" works in my 5" barrel with light and full loads.

However I have a "Rag" that shows pictures and charts to where a FACTORY Nosler 124 HP is set at 1.048" !!

When using "Ball type" powder, one does not want a compressed load........
unlike some Alliant flake powders that have a cut off do to case volume.

Stay safe.