I was going through a bucket of brass that we picked up at the range the other day (I was looking for 45 brass, but don't tell that to my dad), and had picked out a handful of 45 blazer cases, and was fixing to throw them in the trash, and I noticed that one of them was single flash hole.
I checked the bunch that I found (about 25), and all where single flash hole, except one. I punched the primer out of one, and it was a small pistol primer (Standard 45 brass has large pistol primers).
I loaded a couple (6.2gn IMR-4756, and 200gn TC), and went and shot them. They went through the gun just fine.
As for reloading, They sized very easily, and I had no problem.
Just thought that some people here, who have trouble getting brass might like to know this.