Many good ones out there, but it always makes me wonder that almost all just accept what the chokes says for constriction is what they will be getting.
If you don't know your bore diameter and then the diameter of the choke, and subtract choke from bore then you don't know what your actual constriction will be.
Some shotguns are known for tight bores, some are over-bored and sometimes they vary within the same model.
Last competition shotgun I bought was fixed LM/LM. No thinking about chokes and which is best. Point correctly and the target breaks. Couple field guns are fixed Mod. Shooting is much simpler without choke changing. Chokes give us inches and we usually miss by feet.
Gotta agree with knowing the bore vs. actual choke tube constriction. There was a company (Seminole) that would measure your bore and sell you a tube with the exact ID that would give you the desired constriction. Many off the shelf chokes can be ten thousands, or more, off vs. your actual bore. You just never know what your screwing in is right unless you know the actual bore.
