I've never shot any factory multi-ball loads but I have done quite a bit of experimenting with mulitple projectiled ammunition. I've used .32 mag, .38/.357 and .41 mag. with roundballs. .41 mag with short wadcutters. .38/.357 with Speer shot capsules loaded with various items and shotshell pellets in every revolver caliber. They are all promising although some are limited more than others in their application, but is an interesting study and I think they are highly under rated. I've been thinking about going back to the .41 mag for some more experimenting with roundballs, but I need to find some .30-30 brass.