Ive done a fair bit of this, in a number of calibers, but my method is a little different. He likes to 'bump' the ball up, and I prefer to use one a little oversize and size it down to have a 'shank' all around that fits firmly into a fully expanded, fire-formed case neck. BTW, this is basically what happens when you load the right sized ball into a cap & ball revolver.
His recommendation of a light load to drive them is valid, however, I dont find them troublesome to make but really easy. Decap/recap, throw the charge, thumb press in the prepped ball flush and smear some softish lube over the mouth. Good to go. Other than the mentioned change in POI they are quite accurate.