The Tennessee Squirrel rifle was a very lightweight little rifle, much smaller than the "Kentucky Rifle", and was usually half stocked. Most had round barrels. They lacked a patch box, and usually had a depression in the stock for a tallow lube for the patch. A friend of mine, now dead, was a restaurant hunter around Water Valley, Mississippi, and he claimed he used a Harrington & Richardson .38 caliber muzzle loader. I quizzed him several times about .38 caliber (instead of .36) and he was adamant that it was .38 and a caplock. He was able to tell me the "balls to the pound" difference.