I am shooting a 16 gauge smoothbore with a .640 roundball and a .010 patch....my groups are all over the paper can anyone advise me as to what to do to get down to a 4 inch 50 yd group? Should I be shooting wads, cards etc to get better groups?
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I would try a thicker patch if you have them or try working some more lube into the ones you have. an over the powder wad would most likely work for you, if a thicker patch is too much. my trade gun in 62 cal prefers a card over the powder with a .010 patch, any thicker and it loads hard.