10 G I get good crimps with about 1/2 inch 16g fiber, cut down from larger wad. Some hulls need 5/8 inch. The trick is vary the amout of fiber to suit load. Stack height can be very different depending on Hull Shot or Powder charge, my press bushings could throw more or less than yours. The fiber gives the ablity to adjust. It has a little spring, bit too much causes no problems.
16 2 3/4 I used to use Cheerios but found at times they crush, causing the crimp to collapse & leak shot. I went to a navy bean, solved the crimp problem but never patterned the load. My guess is the hard bean does affect the pattern. When Hodgdon published 2 1/2 inch 16 data switched to it don’t need fillers anymore,& did not persue the bean filler.
Willam
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