bowkill: The most important things to remember when you buy material for patching roundballs is it must be 100 percent cotton.
Simply put, any cloth with any man made fibers like nylon, rayon, polyester etc will burn thru and deposit melted plastic into your bore. Only cotton will do.
The material also must have a tight weave so, if you can see light thru it it will burn thru or tear.
If you can't find the red/white or blue/white striped pillow ticking, ask the clerk for pillow ticking. If they give you a blank look, thank them and start looking for material that is thicker than shirt or sheet material and thinner than the heavy denum that blue jeans are made from.
Some people wash the sizing (a starch that makes new material somewhat stiff so it is not easily wrinkled) out of it before using it, and some people leave it in. I prefer to wash it out so there is nothing that might contaminate my bore except fouling.
You can either cut the patching at the muzzle as mentioned above or if you have a .50 cal rifle cut the material into 1 1/4 inch circles or squares.
For a .54 cut it into 1 3/8 inch circles or squares. This size isn't critical as long as the ball has some material sticking out ahead of it when it is loaded into the bore.
If you want cleaning patches find the same cotton material that your skivvies are made out of.
zonie