70mm extended choke. STARS/* ALPHA CODE IDENTIFICATION NUMBER OF SLOTS ON CHOKE TUBES TYPE OF CHOKING MEASURE IN TENTHS(approx) EXTRA-FULL EX-FULL EXTRA-FULL NO SLOTS 11-12/10 * F FULL 1 1/1 9-10/10 ** IM IMPROVED MODIFIED 2 3/4 7-8/10 *** M MODIFIED 3 1/2 4-6/10 **** IC IMPROVED CYLINDER 4 1/4 3/10 SKEET SK SKEET 5 SKEET 2/10 ***** CL CYLINDER NO SLOTS 0/0 1/10 - CL We strongly recommend that a choke of no greater constriction than Modified (***) be used when firing steel shots.For example, using an Improved Modified (**) or Full (*) choke when firing steel shots may cause damage to the barrel and void your warranty.CWe always recommend that you carefully read the instructions on our “owner’s manual” and ammunition box just for more detailed information.
