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  1. 12 Guage shotgun bore size

    Large-Bore/Small-Bore Rifle/Shotgun
    Can anyone help me figure out whether my 12 guage is bored for 3" shells? It's a single shot break action "Crescent Certified" shotgun. It appears there is a "rib" and that point IS 3" from the end where you load the shell. There are no markings that state size shell it is chambered for. Any...
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