IMO there is no point in using bullets lighter than 180 in a rifle. Light bullets are not designed for high velocity and will over-expand; you will be getting in excess of 2000 fps even with 180s in top loads. While hogs are not armor plated, you still want plenty of penetration. 158s and lighter are recipes for failure.
Speer lists AA1680 as giving top velocities with 180s. Nosler lists RL-7 as the top speedster with 180s. Powders slower than H110/W296 will give even higher velocities in longer barrels - as for accuracy, only testing will tell.
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