if you have a fine grained powder such as TAC, use that to check the volume of the cases. Just fill one to the brim with the powder, use a charge funnel to transfer it to case 2...3...etc. A lot less mess than using water.
Best and safest thing to do though is start back at the bottom and rework your load from scratch
Government is like a baby. An alimentary canal with a big appetite at one end and no sense of responsibility at the other. - Ronald Reagan