Not taking anything from JM's extraordinary skill, but I've watched many of his vids - they're inspirational, to be sure, but I've never really learned anything from them. Jerry's in the business of competing and enhancing his brand, not teaching, and IMO, his videos reflect that.
And as far as reloads, there are far too many elements that are very subtle and happen much too fast to glean from his vids. Also keep in mind that JM's reloads, while great for competition, would likely need some tweaking if they are to be used as a template for a good SD reload.
Watch vids if you like - there are
some that are useful - but it'd be best to find a good instructor who know what they're doing and will work with you 1-on-1, then practice a
bunch at home with dummy rounds and empty cases.
BTW, 2 other things to keep in mind:
1) Practice your reloads at the range as well. Practicing at home with dummy rounds and empty cases is critical, but so is practicing at the range with live rounds. One of the reasons why you like shooting revolvers should no longer be that you don't have to bend over to collect your brass.
2) Always keep in mind that your reload is only as good as the shot before and the shot after. A speedy reload is nice, but flubbing either of those shots because you're rushing the reload is counterproductive. Keep that in mind while practicing at the range.