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With all of this talk of opening chokes on HD guns I got out my 1940 30" solid rib gun this morning and measured it. Bore is .730. Choke starts 3" from muzzle and ends with a 3/4" long parallel .693 at the muzzle (.037 constriction). Is that about correct for that era Heavy Duck?
Thanks, Joe
The Following User Says Thank You to Joe Dreisch For Your Post:
choke constriction-HD
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