I have a TC .56SB barrel on the way and getting things ready for it. I have some 15 mm thick cards that i made for my 58 SB so was wondering if they are too tight for a .56. I was also wondering if 12 pack beer and pop cardboard is thick enough for over powder and over shot cards? I have some material that is twice as thick but only have limited amounts of that. When its gone its gone. Tonight i made a couple hundered balls out of tow and then mixed 1/3 beeswax and 2/3's Crisco melted in a double boiler dipped each ball in it and let them drain. Thats my take on a fiber wad. I have used them in the past and seem to work. Not sure if its totally necessary but i figure it would help keep the fowling soft and create a cushion for the shot. What do you guys think when it comes to smooth bores shooting shot? I did taxidermy work in the past and used the tow for making bird bodies its a little coarser than some tow i have seen but rolls up into nice little balls. I have alot of it so im trying to put it to use in this shotgun application. Adding the beeswax and crisco i figure it would help with fowling and not catch fire so easy and make a smoldering fire hazard.