Wow, what a generous response! (Including Bvt.Col. Pitspitr, who made the same offer in a PM.) My heartfelt thanks to all for your generosity
However, I believe I have resolved the problem - a shooting buddy here (who is borrowing my double coach gun for his new "significant other" to use for the big shoot to be held here the same weekend) has agreed to provide me with cast bullet .45ACP ammo.
(In the event what he has available is not enough, I might still need some rounds ..... )