If you are going to shoot lead bullets, get a Lyman cast bullet manual.
Start loads from various manuals are 4.3-5.2gn and MAX loads are 5.0-5.7gn (different guns and mix of components, including powder lot number and exact bullet and COL being used will give this type of variation). I would work up 4.5, 4.8, 5.1, 5.4gn and watch for pressure signs.
Always start with the start load in a manual and always check out a couple of manuals.