Good info.. I was wondering about the TSS damaging the bore.. That's why I've been hesitant. I've shot it a few shots without a cup but think I will hold off until I feel confident i wont hurt the barrel. I couldn't find the shot cups on BPI? Maybe i was looking for the wrong thing.
My plan was 2 lubed felt wads for a gas seal, you think that will be efficient?
Thanks for your help.