BMiracle, Try W-748 or W-760. My personal preference is for the latter, but according to Olin, W-748 is the powder designed for the .308. IMR-4895, and H-4895 are supposed to be very good for target loadings in the .308, so you might want to look into those. IMR-4320 has been very mediocre in any cartridge I have tried it in, with one exception, and that is a magnum wildcat round.
Paul B.
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