Mike Orlen , on his price list has "solder in permanent choke sleeve, $95. What is he offering with this?
A choke sleeve (think of a screw-in choke without the threads) is a thin-wall tube of appropriate diameters and constriction to choke the barrels as specified. The muzzle end of the barrel is reamed to provide a recess that the sleeve fits closely. The sleeve is then soldered in place and you now have a choked barrel. Skillfully done, the sleeves are nearly undetectable to naked eye inspection.
This, IMO, is the optimum solution unless the versatility of screw-ins is needed. Screw-ins can be made flush with the muzzle and turned with an ID friction tool - near undetectable.
DDA
