Charlie: I heard from a guy on the 16g Forum who had Cheddite for Herters 16g “Select Field Dove and Quail” 1 oz. at 1165 fps tested when they were introduced. 1200 fps and just at the SAAMI max. of 11,500 psi.
This is the shell Chuck found, and thanks for his composure to do so; Cheddite Clerinox primer and not the same as the other empties and the unshot shells