I utilised the IMR4198 in my seven.62x39mm reloads since the late 80's. My check out x39mm powder. It gave just one gap accuracy. A several years back again I attempted a pound from the Hodgdon with a whim. Smaller sized sticks so it meters simpler. Larger velocities with reduce pressure https://reloadsworld.com/product/hodgdon-h4198-powder-8-lbs/