IMR 7828SSC Powder has a similar melt away rate and makes use of the exact same data as standard IMR 7828. Even so, due to the very shorter kernels, metering is nearly as good as with a spherical powder.IMR 7828 SSC is my go-to powder for .three hundred Win Mag. The super-short grains make metering a breeze, and I get consistent velocities with ea