There really is not a way to determine the exact date the weapon was made if there is not a serial number. However, this particular shotgun was created between 1958-1968, and is worth up to $700.
Yes, you can shoot a slug through a Win-Choke barrel on a Ted Williams 200 shotgun, but it’s important to ensure that the choke is not too tight, as this could lead to pressure issues or damage the choke. It's generally recommended to use a cylinder or improved cylinder choke for shooting slugs for optimal performance and safety. Always check the manufacturer's guidelines and ensure the shotgun is in good condition before use.
A barrel with a full choke.
System of changable shotgun choke tubes made by Mossberg. Accu Choke is their brand name. A shotgun choke is a means of reducing the bore size at the muzzle of a shotgun, to produce shot patterns that spread to a greater or lesser degree.
Cylinder bore- no choke at all.
Slugs will shoot safely through any choke but Improved cylinder or full cylinder should work.
Check the chambers.
A pattern of a shotgun is determined by the choke at the factory. Some models have a variable choke that makes the user able to change the pattern.
A shotgun barrel with a cylinder bore choke.
They came in various barrel lengths and choke combinations. If it is not marked on the side of the barrel, you will have to pattern the shotgun to determine the choke
To focus the pattern of shot.
No
Yes- that is what the poly-choke is for.