Smokeless powder is problematic in those hulls. Smokeless needs more pressure than black powder at the start of ignition to create conditions for a proper burn. Card wads usually don't seal well enough for that. So I searched for a 16 ga plastic gas seal that would work. all are too small. The hull has a larger internal diameter than any 16 ga wad can seal. I have found the Winchester AA 12 ga wads have a base cup that fits perfectly into the 16 ga. mag tech brass hulls. Loaded up some test batches, with just the gas seal portion under normal 14 ga. fibre filler wads but haven't shot them yet.
Last edited by castnblast; 05/31/21.
