Good info. ThanksGet a good scale to start there are some great recommendations on here. After you get one get it set up and zeroed/calibrated and leave it alone in one place. Making a shield around it to reduce draft in the room three sides of a cardboard box works. After use cover it up dust isn’t your friend on a a finely tuned scale. The only reason I suggested the other powders and brass are they are more common loads with a lot more data out there for them. The brass is just a no brainer if you want consistent loads you need consistent brass and yes you can make good brass out of factory once fired brass but there is no sense in all that work when lapua is available at a reasonable price. Use your time and effort loading and shooting not working sub par brass.