I have been using .7 grain increments when I do my ladder testing to work up a load. I fire 2 five slow shot groups and use the powder load that gives me best accuracy without going over pressure. Is this a good method or should I change the charge increments to smaller/ bigger? Other ideas would be appreciated as well. I plan on getting a 300 RUM or a 7mm RUMwith the o.t. this summer and would appreciate the more experienced people's help in developing a load for which ever one I buy.