I use a load from my Lyman manual for a 7/8 ounce trap load. Remington hulls, Claybuster wads CB0178-12 (AA12L interchange), mec #27 powder bushing for 700x or Red Dot, and win or rem primers. Instead of the shot I push in the slug or buckshot. If I remember correctly its 17 #4 buck, or 6 00...