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That's very good advice! You will find not only the loads you are after, but a lot of other information that will be helpful, especially since you are just starting out.
You're probably better off sticking with "premium" bullets because of the fairly high velocity of the .270 WSM. RL 19, RL 22, Magpro, Retumbo.... these seem to be popular powders for this round. A 140 gr is a good choice for an all round bullet.