Originally Posted By: klshipowerJust bought a new edition Hornady Loading Manual, does not list any 55 grain Z-max bullet data faster than 3500 fps. I would like to get up there around 3800 anyway. Where could I find some powder data for this bullet using this powder.
3,800 with a 55gr and IMR-3031 is really pushing it to the raggity edge. Hodgdon (who is the distributor of 3031) lists 35.2 grains as maximum load at 52,700 psia.
IMR-3031 is an accurate powder in the .220 Swift, but is on the fast burning side.
For a velocity of 3,800, better choices would be, IMR-4007ssc, or even IMR-4895.
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