Most of the powder manufacturers have online data for most chamberings, although bullet selection can be sparse. Choosing a bullet that they have tested that weighs the same as what's in your hand, dropping 10% from their maximum and working up is usually sound advice, as long as you don't do that on their low power "reduced loads".
Berger will send load recommendations via email, and Sierra is currently working on new load data for their next edition. I don't have room on my bench for all the books one could buy, and instead, I've made a spreadsheet from all the manufacturers data that I've found online for the cartridges I reload for.
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