Does anyone know if the shell holder from the Tamer stocks is interchangeable? Will one stock and different size shell holders do it or do you need to buy a Tamer stock separate for each gauge...12, 20, or 410? I assume that you would also need to change the forearm if you went up from a 410...is this correct? If anyone has Tamers of more than 1 size could check this out? Thanks
Cookieman