|its a 172gn projectile...... find data for a 175grn..start 10% below and work your way up...like you will have to do anyway no matter what data you find,even if its projectile specific.......all the older manuals tell you to do this.
not familiar with that particular projectile but MOST speer projectiles are lovely and soft..which equals easy to push out of barrel so not super high pressure.
find RL22 OR IMR-7828sc load close to it and work up.
Not this time,
Anyway I will work up some loads with the powder I have but here is some data from Speer manual #14 I have compare to what they give for their new bullets:
180gr. Grand Slam or Hot core with Reloder 19, max= 78.0gr.
165gr. Grand Slam or Hot core with Reloder 19, max= 80.0gr.
and for the 172gr. Impact with Reloder 19, max= 85.5gr. As you can see there is something different in the construction of their new bullet if you can go that high for the max load with that powder