Obviously you enjoy the challenge, I would suggest you get a very good caliper and a good digital camera and find a friend who has a can that can be disassembled so you can take measurements and pics. Now I know I'll probably get grief for saying this, cries of patents, trademarking etc.. But your obviously building these for yourself and not for profit. Most modern cans are very similar in construction and the basic concepts are all about the same. So once you have a pattern perse you can build for different calibers. Also there are a few books still available on amazon from the old days from Hayden and some others that will at least give you a very good starting point on building suppressors. Also check eBay for blueprints on CDs, most of them seem to come from the UK now days, but they will show blueprints for a variety of suppressors. Having the knowledge or even selling the knowledge on how to construct a suppressor is not illegal in most states, it's the actual unlicensed construction that's illegal. But you have that part handled. So good luck.