My 32-40 model 1894 shoots Speer 170 grain jacketed bullets dead accurate. I got hold of some 170 grain cast Rim Rock 32-40 bullets and they are dead on azimuth wise but about a foot high elevation wise. I have no elevation adjustment left. Tried faster loads, slower loads, 5 different powders and no change. Any ideas? The Speer bullets are .321 diameter and the cast are .322. Really nice bore.