There are a few 10+ round solid .45’s out there.
FWIW, the other day I made an interesting discovery:
a standard 10 rd 7.62 stripper clip will hold 8 .45 cartridges (can’t get them around the bend and still get them out - so four on one end, and four on another). Not much help on speed loading, but for keeping 8 together handily...
Thanks for the info on the stripper clips too. That could come in handy