'morning,
If I'm using early war clip tail, I use standard .50 paper tubes. If I'm using the later war flat base, I use the same mandrel that I use for making live rounds and I use tissue paper for the base. I really don't use the flat base blanks much, they're so tedious to make, and without a bullet on them, they sit down in the cartridge box tins too far.
And hot caps. Schutzen or RWS wingless (the later no longer in production). If I have to use standard RWS caps, I use a little bit of 4f at the base as a primer (to be exposed when the tail is cut).
I really hope Gun Tramp was joking, because nothing looks worse than that. I watched on guy do it at an event, and gave him hell afterwards. That he was on the opposing side and wearing kermit green instead of the proper dark green didn't improve my attitude.
Mike