Daryl:
Good stuff. I have yet to put together the loads for my 16ga smooth barrel for my Husky combo. I intend to do the same using a .61 diameter ball to accomodate the choke of my tightest 16 bore. I will work with your advise of upright and upside down trimmed shot wad bases. The 12.7mm rifle bore shoots to aim with roughly 75 grain (volume equal to BP) charge of 777. This fills the case with a card wad and a swaged .510 410 grain HB Hornady bullet. I have only shot it at 50 meters. I plan to load 2.5 inch brass magtech shells for the ball loads. With the thin brass, I was thinking of trying a paper liner in the shell to tighten the space and make the wads fit better.
Any thoughts?