In his book “Guns, bullets and gunfights”, Jim Cirillo refers to his preferred wadcutter design as sharp edged and cupped. Is the sharp edge straight or angled? Also, is the ‘cupped’ part a shallow, or deeper, saucer shape? I have molded different wadcutters over the years but not a steep dish design, if that is what he is referring to; and would like to pour some. Are the molds available?