See if you can find a first or second edition of Lymans Shotshell Handbook dated 1969. They list quite a number of loads using Alcan powders in all gauges except .410 using all of the hulls popular at that time. Many of the primers listed are long out of production and there are very few loads that use modern wads so it would be prudent to send any loads with component substitution to a reputable facility for pressure testing especially if you are going to shoot them in a vintage gun.