According to the chart Squirrelsaurus Rex shared with us, the 28 ga should mic at 0.550" -- does it work that way in practice?
What size ball & patch combo are you guys shooting in your 28 ga?
What shot & powder loads are giving you good patterns and penetration?
What size ball & patch combo are you guys shooting in your 28 ga?
What shot & powder loads are giving you good patterns and penetration?