Hi Wayne, .565" Diameter SPECS --Looking for a choke tube to help bag that turkey this year? Carlson's has the answer with their Extended Turkey Choke Tubes! Made from 17-4 stainless steel, the same durable material as their other choke tube options, which is heat treated and given a matte black finish. These tubes will extend approximately 1" beyond the end of your shotgun barrel. This choke's 1.050" parallel section produces optimum patterning with your Remington Choke shotgun for turkey hunting.
Specifications and Features:
Carlson's Remington Choke Extended Turkey 10312
20 Gauge shotguns
Extends approximately 1" beyond barrel end
Turkey constriction
.565" Diameter
NOT for use with steel shot
Stainless steel
Matte Black finish
Fits:
Chiappa Triple Crown and Triple Threat
Remington 870, 887, 11-87 and 1100

at .565" Diameter It is a Turkey constriction for a Remington 20 ga turkey is the tightest (most constriction) of all the choke tube over .040 it is for use with lead shot only good article on chokes here rem870.com/2012/05/06/shotgun-chokes-explained-cylinder-improved-cylinder-modified-full/

Wayne, the diameter is .565" - Carlson's Remington Choke Extended Turkey Choke Tube 20 Gauge .565" Diameter Stainless Steel Matte Black.

Please click the green box stating it as the best answer. We are
rated on our answers and are just volunteers, not Buds
employees. You can choose more then one Thank you!