Jim Your right with the tappered beads thats probable the only way. Unless you could stop with the milgrain, tapper some beads in and then use a smaller milgrain. It would take a bit of experimenting and notes but might be a little quicker.
Your right I got beading tools all over the place don't need any of those, what else you want to give away
The last milgrain tools I bought had GFC stamped on them, they where made in France. I don't know where I got them though. They have been holding up well. If they hit steel that will break the rivet when using an air tool, by hand that won't happen.
If you could use a milgrain tool it would save alot of cleanup time.
Your beads look great Jim. I don't think it could be done any better.
Mike Cirelli