I have an old Hart blank I picked up some time ago and have no idea what kind of code they use for marking barrels at the time. The # stamped on the end is "X2312" and under it "6". I know that it is a .243 bore, but am wondering if this mark indicates a 12 twist? I am not very good in using a patch and cleaning rod for determining, but that may be my only option. Can anyone shed some light on this?
Thanks for any help available,
Rick
Thanks for any help available,
Rick
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