・Dome depth of cans tends to change by B/M.・Dome reversal pressure decreases with increasing dome depth.・There are no significant difference of thickness distribution of can bottom.・Width of the grounding part of deepest dome can is about 0.5 mm wider than shallowest one.・The other samples have similar shape difference. ・It is assumed that dome of cans are deepen because of it’s less bottom reform deformation and that is why dome reversal pressure is low.