There is a ton of data in most published reloading manuals and powder/bullet manufacturer websites. My first loads with RMR 124 JHPs was right out of my Nosler manual. Worked great.

FWIW; I pay very little (no) attention to any data I see on a reloading forum, hear from any gun counter clerk, \”favorite loads\” forum/website, good intended friend, range rat, or gun shop guru. I get 98%+ data from published reloading manuals with some from powder/bullet manufacturer\’s web sites. I have been using this, my \”Rule #1\” for over 40 years and had one squib in \’70, and no Kabooms,. Added to this I record every load and results so I can go back and use that data for further use/experimenting…