Saubier was my go-to website 10 years ago. I haven't checked in on them recently.
Todd Kindler (The Woodchuck Den, Small Caliber News) retired a few years back. He was loading "at the gritty edge" of safety, but was a big booster of the sub-caliber cartridges. Some of his articles may still be on line.
I may have dies for the 19 Calhoun. I'll have to go looking in the wishing well that is in my workshop.
