Good luck with that. 45lc ammo is scarce in any fashion. Better to learn how to reload. But even then it's nearly impossible as getting the components - any of them - is just as scarce.
We have loads of them, here in Germany. But are restricted to just two handguns, with some exceptions. I personally have to boxes of them but fired just a few shots from my Colt SAA. I stopped it immediately because of the excessive smoulder or fouling.
Get in touch with Mackay Sagebrush in the classifieds for some of his 45 colt Cowboy loads.
"Camping places fix themselves in your mind as if you had spent long periods of your life in them. You will remember a curve of your wagon track in the grass of the plain like the features of a friend." Isak Dinesen