I would also say a .595" ball of pure lead and as thick a Ticking as you can find.
I have seen ticking as thick as .022", but the store called it Denim. It was not denim
as the weave was different.
Denim in various thicknesses is easier to find. Joanne's Fabrics sells it in oz. weights.
8 ounce is about .018". 10oz. usually runs to .0225", 11 oz. should be .025", 12oz. will run .030" & 14oz. will be .034"- all USUALLY.
These measurements are all compressed in my dial calipers as tightly as I can squeeze the tines together, forefinger and thumb, across the weave.
I have 3 sets of calipers and each gives a different reading, with the one above, being in the middle (they measure .001" apart).
I measure Oxyoke ticking patches as being .015" for their 18 thou. and .016/.017" for their .020 thou., so if using OxYoke store-bought patches, their .022" might
work OK.
a word about muzzle crowns to be able to load snug combinations that do not require wiping the bore at any time while shooting long strings.
Use emery or wet/dry paper in 320 grit. This is strechman's muzzle (.62)
1st picture is the factory machine-cut muzzle with corners that cut patches.
2nd picture is the same muzzle after a couple minutes of "work".
Turn the barrel 180 degrees every 20 seconds or so or rotating the abrasive cloth or paper in the muzzle, or even more often 90 degrees.
Turning the barrel/rifle, will ensure an even muzzle crown.