Speaking of Sierra, what is it about the 168gr FMJBT they make, that makes them so popular with Garands loaders? I see more loads for 168 gr, than I do for 150gr.Also, write everything down in a journal and keep track of your cartridges. Shoot at paper for groups and save your targets with notes including date and load data. The journey to finding your pet load can take a while and documentation is helpful.
When shooting, use a bipod or sturdy rest and let your barrel cool for at least 3 minutes between shots. A chrono is nice, but the speeds published in the Sierra manual is accurate in my experience.
Have fun!
Also what data fields should I keep in my reloaders log? I already set a basic one up via Google Drive, which is nice as I can input them in right away via my phone or tablet.