Thin wall choke reamer. The pilots come in various sizes to fit your bore. Feb 22, 2026 · Looking for recommendations for cutting and threading shotgun barrels for chokes? 870 Reminton bbl that I would like to use Rem Chokes in the barrel. 730 inch. Screw-In Choke Tooling is only available as Removable (Live) Pilot Finishing Reamers. Pilot Bushings can be purchased under Shotgun Pilot Bushings. Click here for proper installation requirements. Oct 11, 2022 · Before accepting a particular shotgun for this conversion, however, you need to determine if choke tubes may be installed. Standarad and thin-wall systems, Barrel porting, gunfitting, recoil pad installation, lengthening, polishing long forcing cones, chamber and head spacing work. There must be sufficient barrel wall thickness left after reaming/tapping for adequate strength so the choke tube will not be blown out of the barrel. TiCN Coating, formally known as Titanium Carbo-Nitride coating, is an all-purpose strengthening coating that does especially well with cutting applications.