I'll tell ya how i load mine. I use a copper pipe, some use pvc, anyway I stick the pipe into the powder chamber. I use powder flasks and have lots of different spouts for different charges. pour the powder in the pipe, remove the pipe slowly, now you have powder in the chamber. insert golf ball, i never use wads. just powder and a golf ball..... insert fuse, now you are ready to fire. a good STARTING load is 50 grains of ffg black powder, I like Goex. do you have a powder measure? got any Goex? does your mortar have a powder chamber? anyway, ya now know how I load mine,welcome to the forum.