Herter's sold various maker's products with their name on them.
Yes, they describe the various chokes.
No, Invector chokes will not fit the Browning Medalist shotgun. The Medalist typically uses fixed chokes that are integral to the barrel, while Invector chokes are designed for Browning shotguns with removable choke systems. It's important to check the specific model and choke compatibility for your shotgun.
By opening up or constricting.
Modified.
It was manufatured by Fuji Arms in Japan
Chokes for shotguns shrink the bore's diameter to tighten the shot pattern and increase practical range.
they help with patterns of shot and accuracy of slugs
A good basic article on chokes http://www.ssaa.org.au/stories/shotguns-a-beginners-guide-to-shotgun-chokes.html
Try e-gunparts.com
Refers to the amount of constriction at the muzzle.
Yes chokes are designed to tighten shot patterns.
I paid 425 with the camo , the slugbarrel and chokes