“U.S. shooters prefer the letters on the choke verses the numbers like 1/4, 1/2. as that is what most are use to those markings. Might be an option as to what type of markings you prefer.”
“Constriction marking is neat, clear and helpful to avoid removal to check the constriction. Unfortunately, my Browning thread placed it below the bottom of the top barrel so it is obscured by the extended Teague choke in the bottom barrel.”