I'm totally new to reloading so I don't know much about it. So how do I develop a good load for my 270? I have nosler bt 130 gr. that I want to work with and figure out what I'm doing and then once my hammers get here hopefully I'll have it figured out. I'm using h4831. Is it ok to test the different powder charges and then do a seating depth test after or is it better the other way around?