gunsmithing

Been looking for a few schematics/Blue Prints and while hunting the web came across the website to purchase a subscription for it. Before I roll the dice and get it was hoping a few fine people on here have used it or have some experience with it. I'm not wanting to piggy back anyone I will buy...

I'm curious how people work up a wildcat round. After figuring out all the deminsions and getting a reamer cut to make the chamber, how do you know you're within safe pressures for the barrel? Are there "proofing" places around or is that just from across the pond? I was just trying to figure...