So, back in the day before my time, my father hung around with a gentleman who happened to have an original long rifle in the .40-.54 range. I happen to have very few other details than he'd shoot it in matches and do quite well and that his trees had odd growths from barking squirrels. My question is he is supposed to only have used chamois as a patch material and attributed it to being a German Jaeger thing. What's the deal here, is this the be all end all patch, a baseless rumor, or something to be avoided altogether?