Fulton Armory might have what you are looking for. Good quality repro GI cases with brass zippers. Garand / M14 size = $22.46 unlined, $35.96 fleece lined. I use their fleece lined for my CMP rifles and am well pleased with the product.
Quick delivery and good people to deal with. I have no connection with them other than being a customer for several years.
Regards, Al