Re: Oal first or charge wegihts first?
Most barrels have a sweet spot somewhere between .012 and .030 where you will find the best accuracy. I'd also pick a place maybe around .020 and leave that as a constant. Start playing with one thing at a time but keep your barrel cool and clean. That is very critical. Also, not only powder charge but the burn rate is important. Just because the book tells you that a certain powder produced the best accuracy for them, doesn't mean a hill of beans to you.
I would also say, don't spend all summer testing loads. Find a good one and go have fun! You can easily burn up a barrel and a bank account, looking for that magical load. Just find a good one and go kill something!
Indian Country Lawman