I know of no plans for a case, probably because there are so many different pistols. You will probably have to design your own case. Look at some of the books with lots of photographs of cased pistols. Get some cardboard boxes from a supermarket and tape together a proto-type. 1/4" plywood can be used although it is heavy and you can use furniture grade plywood if appearance is important. There is also veneer such as walnut that might work. The inside is lined with felt and you can buy cabinet furniture for a hasp or lock and brass corner guards. Glue and brads will hold everything together. I used 1/8 inch wood dowels that worked fine.
Some of the compartments need a lid with a knob top. This knob must be high enough to be held in place when the top is closed. That way the lid stays in place and the contents of the compartment don't spill all over the place if you pick up the case and carry it sidesways or upside down. The underside of the lid needs to be beveled.
I have a single shot, hawken type pistol with a belt hook. I installed a couple of "bridges" to hold the pistol properly because of the belt hook. I take the entire case to the range and it is made out of plain plywood that I stained. No work of art but it looks pretty good and considering the usage, I saw no point in making a really fine case out of walnut or cherry. I could have glued on walnut veneer for just a few extra dollars.
