The blue stripe I examined was .018" thick, using my micrometer, and doing a crush fit. The red striped ticking was thinner, but I don't remember the exact number, now. When I found out how many different thicknesses there were, I realized I needed to do some homework with the ticking I still had at home, by both measuring it, and then doing some testing with my barrel. I don't want to have to pound the patch and ball down the barrel. With pure lead balls in my .62 smootbore, I want them to go down firm, but I do expect them to upset with my 2 3/4 dram load( 75 grains ) FFg., with a overpowder wad on top of the powder, and a lubed cushion wad between the overpowder wad and the PRB. For a second shot, I would use just the overpowder wad and the PRB. Velocity is less than 1100fps, below the speed of sound, and at the ranges I expect to shoot( out to 75 yds.) it has no problem penetrating a deer broadside, and doing enough damage from any other angle to insure a clean kill. I don't expect to need a second shot very often.