most common 12 gauge threaded choke tube tap & die "standards" 32 TPI .8??"

trulockchokes.com/choke_identification_tool.html
amazon.com/dp/B09SY6PGW8
machiningdoctor.com/threadinfo/?tid=94
pacifictoolandgauge.com/611-shotgun-taps-nopix-

32 TPI X .814" / .812" / .809" "13/16" = Remington, Winchester, Mossberg, Weatherby,
32 TPI X 53/64" .828" browning Invector,
44 TPI X .775” = Thin Wall Tru-Chokes
44 TPI X .795” = standard Tru-Chokes
20.8mm x 1mm Beretta Mobil Choke

if .735” max bore , .850" OD minimum @ muzzle

bore to choke max constrictions sold
.740 695
vs
.726 681

TPI = threads per inch

= other citations archived due to youtube link bot & censor flag threats

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