Sonny- sorry, don't know the paper used. I would try 18 pound printing paper. If only 2 wraps, it is fairly easy to tear off.
mole eyes
The ball end of the ctg. sits in the palm very nicely, and the tip of the small end is ripped off with the teeth, then shoved down into the muzzle. The ball stops it and while you pull out the loading rod, the powder drains down into the breech. The rod is choked up on - only a couple inches from the end, and carefully the ball, with paper covering is shoved down into the bore about 2" or 3". The paper covered ball, as I make and recommend others make them for rifles, is a VERY snug fit- with the lands marking the paper as it is showed down. You cannot shove them into the bore with your thumb.
Pushing them down a bit into the bore first, with a choked up rod or a short starter, gives rod support and allows the paper ctg. to be easily seated form there down onto the powder- firmly. That compresses the paper beneath the ball and assists in sealing the ball and bore from gas blowby.
Dan Pharris as well as several others here at the ALR have used this style of paper ctgs. in their 28 through 12 bore rifles and achieved identical shooting at 50 yards as with their normal tight cloth patch. A close friend of mine here uses them in his 11 bore Sporting Rifle with equal accuracy to patched balls, but due to the over depth rifling, his bore fouls badly. It's .025" deep rifling fills with fouling as the paper, I assume, cannot seal it or scrape out previous shot fouling well, even though he's running low pressures. He must wipe the bore out every 3 or 4 shots - a nasty, dirty job.
The smallest bore these paper ctgs. seem to work in, is a .54. I expect this is due to the normal low pressures associated with the larger bores. I have only shot them in my .69 - which shoots identically at 100meters, with paper ctg. or ball patched with 12 ounce denim. (.025" to .030"[compressed] depending on tool used) In that rifle, I can shoot 10 without having to wipe the bore, then I shoot one shot with a dripping wet patched ball and 3 drams of powder. That effectively cleans the bore and allows another 10 paper ctg. to be accurately fired.
I developed this method to allow easy loading and good accuracy while hunting our North Country in the Winter time for moose due to the extreme temps involved - down around -40F to -56F. Few oils will work at those temps and no greases do. Also- those temps are hard on springs and everything else. We were also younger then.