IMR 7828SSC Powder has the exact same burn off amount and utilizes exactly the same data as normal IMR 7828. However, as a result of really brief kernels, metering is sort of nearly as good as with a spherical powder.IMR 7828 SSC is my go-to powder for .three hundred Gain Mag. The super-brief grains make metering a breeze, and I get constant veloc