I would go with 6.5 swede. more bullet options, (though 7 will probably be a very close second), a lot easier to get ahold of(at least in my area), and very flat shooting.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
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Bean counters told me I couldn't fire a man for being in a wheelchair, did it anyway. Ramps are expensive.-Cave Johnson.