Ballistic products hard waxed wad works well. The same or similar is sold by Precision reloading. These appear to be the same wads that Kent used to use in their fiber loads. I still have a flat of 12's and 20's and I took one of each apart at one time. A friend gave me a whole lot of Winchester Molded Fiber wads and Alcans both of which are waxed and surprisingly haven't dried out. In those lots that I got were a 1000 Lujtic Mono wads. I've been experimenting with these in 2" shells and Fed paper. I've been working at full fiber loads for 2" but had to step back a bit of late. I believe Gil has been pursuing that with some success.