Jim, I've used dry felt wads a little in my .45-2.4" PP rifle, and almost always in my Shiloh .45-2-7/8". In both cases I simply copied Kenny Wasserburger's wad stack which is a veg wad, an LDPE wad, and a 1/8" dry felt wad. It's never caused me any problems with cases. It might be worth another try if you want to do some experimenting.