Need some help with Unique 9mm load
I am new to reloading and have taken a lot of people's advice and read a few manuals and at the point where I am ready to start reloading. I have 124g fmj rn from precision delta, unique powder, and mixed brass. With Lyman's 49th there is no fmj so I was thinking of following the 124g hp load which says 4.5-5 but on alliants website it shows same hp type bullet same weight with a max of 5.8? Am I missing why there is such a variance? And I was thinking 1.130 for starting oal since I can't use either oal for these load data sources? Thanks in advance !!