Thanks Fingers, it's great to hear that someone else had a similar experience. I didn't expect much but sheesh, this was ridiculous.
Clem, I just discovered that Blackhorn 209 works in cartridges, is not corrosive and is supposedly very non-hygroscopic as well. They provide loading data for the .45 Colt here:
http://www.blackhorn209.com/loaddata/
I'm going to give some 209 a try as I like everything it's supposed to do well.
Delozier I think you've hit upon it with the hand press because I just don't have a place to set up a bench loader but I'm scratching my head over the issue.
Brian, I'm certain I'll give some BP loads a try as well. At least I wouldn't have to worry about shelf life as you do have to with most of the BP substitutes.
Thanks,
Oly